Crime drop: Difference between revisions

Content deleted Content added

Inline

Revision as of 22:21, 18 November 2017

The crime drop or crime decline is a pattern observed in many countries whereby rates of many types of crime declined by 50% or more beginning in the early 1990s.^[1] In the United States, for example, violent crime rates have fallen by over 50% in many major U.S. cities since these rates peaked in the early 1990s; in New York City, these rates had dropped by 75% from the early 1990s to 2010.^[2] In the United States, a second decline in the crime rate was also observed, with homicide rates declining first from 1994 to 2002, and then again from 2007 to 2011.^[3]

Internationally

On average, international crime declines from 1995 to 2004 were as follows: 77.1 percent in theft from cars, 60.3 percent in theft from person, 26.0 percent in burglary, 20.6 percent in assault and 16.8 percent in car theft.^[4] The crime drop since the early 1990s has occurred in many countries, including the United States, the United Kingdom,^[5] and New Zealand.^[6] However, no overall crime decline occurred in Western Europe during this period.^[7]

Causes

Many hypotheses have been proposed as to why crime has fallen, especially in the United States.^[8] Blumstein & Wallman (2006) conclude that a complex interaction between "prisons, drugs, guns, policing, economics," and "demography, including abortion" is the best explanation for the crime drop in the United States.^[9]

Drug use and demand

Alfred Blumstein argues that part of the drop in the United States' violent crime rate is due to declining demand for crack cocaine.^[10] A 2014 report by the Home Office stated that changes in demand for illegal drugs (specifically, heroin) were a major contributor to the crime drop in the United Kingdom.^[11]

Economic factors

The mainstream view among criminologists is that unemployment and poverty are strongly related to crime, because a decrease in opportunities for legal employment, in theory, should increase the frequency of illegal employment.^[12]^[13] Multiple studies of the United States, for example, have found that the improvement of the American economy coincided with a drop in crime throughout the 1990s.^[14] A 2015 Brennan Center for Justice report, however, estimated that no more than 5 percent of the 1990s crime drop in the United States was attributable to changes in unemployment.^[15] The view that higher unemployment rates cause higher crime rates has also been challenged by the fact that the United States crime rate reached a 40-year low in 2010, despite America's lagging economy.^[13]

Immigration

Studies of the United States have shown that increases in the concentration of immigrants are associated with decreases in violent crime rates, especially homicide and robbery. This relationship suggests that increasing immigration to the United States may be responsible for part of the recent drop in violent crime rates in the United States.^[16]^[17]

Incarceration

A 2015 Brennan Center for Justice report found that increased incarceration was responsible for about 5% of the crime drop in the United States during the 1990s, and for essentially none of the crime drop there since 2000.^[8] Commentators and academics who question the role of incarceration in the crime drop have noted that Canada's crime rates followed similar trends as those in the United States during the 1990s; in contrast, Canada's incarceration rate did not change significantly during this time, while that of the United States increased significantly.^[18] In 2009, Steven Messner and Richard Rosenfeld found that incarceration was negatively related to burglary rates "...only after unusual policy interventions, such as Italy's 2006 clemency measure that dramatically reduced the size of its prison population."

Policing

Some have proposed that changes in policing practices (e.g. the adoption of broken windows policing) were responsible for the crime drop in the United States, especially in New York City.^[19]^[20]^[21] However, Canada did not change its policing practices significantly prior to their crime drop, which casts doubt on the extent to which policing was responsible for this phenomenon.^[18] Some of the most popular claims about policing reducing violent crime are not supported by the evidence.^[22]

Levitt (2004) estimates that increases in the number of police accounted for between 5 and 6% of the crime drop in the United States during the 1990s.^[23] A 2007 study found that misdemeanor arrests were negatively associated with changes in total homicide rates in New York City.^[24]

Security hypothesis

A 2014 article in Crime and Justice reported that the "security hypothesis" was the best explanation for the drop out of the 17 hypotheses tested.^[1] This hypothesis proposes that improved and more widespread security devices, like electronic immobilizers and central locking, were responsible for a large part of the crime drop by preventing numerous crimes.^[25] Consistent with this hypothesis, attempted crime has also been declining, suggesting that would-be criminals are becoming discouraged by improved security.^[26]

References

^ ^a ^b Farrell, Graham; Tilley, Nick; Tseloni, Andromachi (September 2014). "Why the Crime Drop?". Crime and Justice. 43 (1): 421–490. doi:10.1086/678081.
^ Drum, Kevin (2016-02-11). "Sick Kids Are Just the Beginning of America's Lead Crisis". Mother Jones. Retrieved 2017-07-30.
^ Parker, Karen F.; Mancik, Ashley; Stansfield, Richard (May 2017). "American crime drops: Investigating the breaks, dips and drops in temporal homicide". Social Science Research. 64: 154–170. doi:10.1016/j.ssresearch.2016.09.029. ISSN 1096-0317. PMID 28364841.
^ Tseloni, Andromachi; Mailley, Jen; Farrell, Graham; Tilley, Nick (2010-09-01). "Exploring the international decline in crime rates". European Journal of Criminology. 7 (5): 375–394. doi:10.1177/1477370810367014.
^ Travis, Alan; editor, home affairs (2013-01-24). "Fall in UK crime rate baffles experts". The Guardian. Retrieved 2017-07-30. {{cite web}}: |last2= has generic name (help)
^ Farrell, Graham (2013-09-22). "Five tests for a theory of the crime drop". Crime Science. 2 (1): 5. doi:10.1186/2193-7680-2-5. ISSN 2193-7680.{{cite journal}}: CS1 maint: unflagged free DOI (link)
^ Aebi, Marcelo F.; Linde, Antonia (2010-12-01). "Is There a Crime Drop in Western Europe?". European Journal on Criminal Policy and Research. 16 (4): 251–277. doi:10.1007/s10610-010-9130-y. ISSN 0928-1371.
^ ^a ^b Chettiar, Inimai M. (2015-02-11). "Locking More People Up is Counterproductive". The Atlantic. Retrieved 2017-07-30.
^ Blumstein, Alfred; Wallman, Joel (December 2006). "The Crime Drop and Beyond". Annual Review of Law and Social Science. 2 (1): 125–146. doi:10.1146/annurev.lawsocsci.2.081805.110011.
^ Geoghegan, Tom (2011-06-21). "US crime figures: Why the drop?". BBC News. Retrieved 2017-07-30.
^ Cobain, Ian (2014-08-31). "Tough case to crack: the mystery of Britain's falling crime rate". The Guardian. ISSN 0261-3077. Retrieved 2017-07-30.
^ "The theory: the economy got better and crime got less appealing". Vox. 2015-06-14. Retrieved 2017-11-18.
^ ^a ^b Wilson, James Q. (2011-05-28). "Hard Times, Fewer Crimes". Wall Street Journal. ISSN 0099-9660. Retrieved 2017-11-18.
^ Dijk, Jan van; Tseloni, A.; Farrell, G. (2012-11-14). The International Crime Drop: New Directions in Research. Springer. p. 203. ISBN 9781137291462.
^ Ford, Matt (2016-04-15). "What Caused the Great Crime Decline in the U.S.?". The Atlantic.
^ STOWELL, JACOB I.; MESSNER, STEVEN F.; MCGEEVER, KELLY F.; RAFFALOVICH, LAWRENCE E. (August 2009). "IMMIGRATION AND THE RECENT VIOLENT CRIME DROP IN THE UNITED STATES: A POOLED, CROSS-SECTIONAL TIME-SERIES ANALYSIS OF METROPOLITAN AREAS". Criminology. 47 (3): 889–928. doi:10.1111/j.1745-9125.2009.00162.x.
^ Wadsworth, Tim (June 2010). "Is Immigration Responsible for the Crime Drop? An Assessment of the Influence of Immigration on Changes in Violent Crime Between 1990 and 2000". Social Science Quarterly. 91 (2): 531–553. doi:10.1111/j.1540-6237.2010.00706.x.
^ ^a ^b Ouimet, Marc (2002). "Explaining the American and Canadian Crime Drop in the 1990's". Canadian Journal of Criminology.
^ Board, Post Editorial (2016-07-13). "New York's latest crime drop proves yet again that Broken Windows policing works". Retrieved 2017-07-30.
^ Weisburd, David; Telep, Cody W.; Lawton, Brian A. (11 January 2013). "Could Innovations in Policing have Contributed to the New York City Crime Drop even in a Period of Declining Police Strength?: The Case of Stop, Question and Frisk as a Hot Spots Policing Strategy". Justice Quarterly. 31 (1): 129–153. doi:10.1080/07418825.2012.754920.
^ "The theory: putting more police on the streets prevented crime". Vox. 2015-06-14. Retrieved 2017-07-30.
^ "Have Changes in Policing Reduced Violent Crime? - Crime & Justice Research Alliance". Crime & Justice Research Alliance. Retrieved 2017-07-30.
^ Levitt, Steven D. (2004). "Understanding Why Crime Fell in the 1990s: Four Factors that Explain the Decline and Six that Do Not". Journal of Economic Perspectives. 18 (1): 163–190. doi:10.1257/089533004773563485. ISSN 0895-3309.
^ MESSNER, STEVEN F.; GALEA, SANDRO; TARDIFF, KENNETH J.; TRACY, MELISSA; BUCCIARELLI, ANGELA; PIPER, TINKA MARKHAM; FRYE, VICTORIA; VLAHOV, DAVID (May 2007). "POLICING, DRUGS, AND THE HOMICIDE DECLINE IN NEW YORK CITY IN THE 1990s". Criminology. 45 (2): 385–414. doi:10.1111/j.1745-9125.2007.00082.x.
^ Farrell, Graham; Tseloni, Andromachi; Mailley, Jen; Tilley, Nick (22 February 2011). "The Crime Drop and the Security Hypothesis". Journal of Research in Crime and Delinquency. 48 (2): 147–175. doi:10.1177/0022427810391539.
^ Farrell, Graham (2015-11-27). "Attempted Crime and the Crime Drop". International Criminal Justice Review. 26 (1): 21–30. doi:10.1177/1057567715615392.

[cj-1] Farrell, Graham; Tilley, Nick; Tseloni, Andromachi (September 2014). "Why the Crime Drop?". Crime and Justice. 43 (1): 421–490. doi:10.1086/678081.

[2] Drum, Kevin (2016-02-11). "Sick Kids Are Just the Beginning of America's Lead Crisis". Mother Jones. Retrieved 2017-07-30.

[3] Parker, Karen F.; Mancik, Ashley; Stansfield, Richard (May 2017). "American crime drops: Investigating the breaks, dips and drops in temporal homicide". Social Science Research. 64: 154–170. doi:10.1016/j.ssresearch.2016.09.029. ISSN 1096-0317. PMID 28364841.

[4] Tseloni, Andromachi; Mailley, Jen; Farrell, Graham; Tilley, Nick (2010-09-01). "Exploring the international decline in crime rates". European Journal of Criminology. 7 (5): 375–394. doi:10.1177/1477370810367014.

[5] Travis, Alan; editor, home affairs (2013-01-24). "Fall in UK crime rate baffles experts". The Guardian. Retrieved 2017-07-30. {{cite web}}: |last2= has generic name (help)

[6] Farrell, Graham (2013-09-22). "Five tests for a theory of the crime drop". Crime Science. 2 (1): 5. doi:10.1186/2193-7680-2-5. ISSN 2193-7680.{{cite journal}}: CS1 maint: unflagged free DOI (link)

[7] Aebi, Marcelo F.; Linde, Antonia (2010-12-01). "Is There a Crime Drop in Western Europe?". European Journal on Criminal Policy and Research. 16 (4): 251–277. doi:10.1007/s10610-010-9130-y. ISSN 0928-1371.

[atlantic-8] Chettiar, Inimai M. (2015-02-11). "Locking More People Up is Counterproductive". The Atlantic. Retrieved 2017-07-30.

[9] Blumstein, Alfred; Wallman, Joel (December 2006). "The Crime Drop and Beyond". Annual Review of Law and Social Science. 2 (1): 125–146. doi:10.1146/annurev.lawsocsci.2.081805.110011.

[10] Geoghegan, Tom (2011-06-21). "US crime figures: Why the drop?". BBC News. Retrieved 2017-07-30.

[11] Cobain, Ian (2014-08-31). "Tough case to crack: the mystery of Britain's falling crime rate". The Guardian. ISSN 0261-3077. Retrieved 2017-07-30.

[12] "The theory: the economy got better and crime got less appealing". Vox. 2015-06-14. Retrieved 2017-11-18.

[wilson-13] Wilson, James Q. (2011-05-28). "Hard Times, Fewer Crimes". Wall Street Journal. ISSN 0099-9660. Retrieved 2017-11-18.

[14] Dijk, Jan van; Tseloni, A.; Farrell, G. (2012-11-14). The International Crime Drop: New Directions in Research. Springer. p. 203. ISBN 9781137291462.

[15] Ford, Matt (2016-04-15). "What Caused the Great Crime Decline in the U.S.?". The Atlantic.

[16] STOWELL, JACOB I.; MESSNER, STEVEN F.; MCGEEVER, KELLY F.; RAFFALOVICH, LAWRENCE E. (August 2009). "IMMIGRATION AND THE RECENT VIOLENT CRIME DROP IN THE UNITED STATES: A POOLED, CROSS-SECTIONAL TIME-SERIES ANALYSIS OF METROPOLITAN AREAS". Criminology. 47 (3): 889–928. doi:10.1111/j.1745-9125.2009.00162.x.

[17] Wadsworth, Tim (June 2010). "Is Immigration Responsible for the Crime Drop? An Assessment of the Influence of Immigration on Changes in Violent Crime Between 1990 and 2000". Social Science Quarterly. 91 (2): 531–553. doi:10.1111/j.1540-6237.2010.00706.x.

[cjc-18] Ouimet, Marc (2002). "Explaining the American and Canadian Crime Drop in the 1990's". Canadian Journal of Criminology.

[19] Board, Post Editorial (2016-07-13). "New York's latest crime drop proves yet again that Broken Windows policing works". Retrieved 2017-07-30.

[20] Weisburd, David; Telep, Cody W.; Lawton, Brian A. (11 January 2013). "Could Innovations in Policing have Contributed to the New York City Crime Drop even in a Period of Declining Police Strength?: The Case of Stop, Question and Frisk as a Hot Spots Policing Strategy". Justice Quarterly. 31 (1): 129–153. doi:10.1080/07418825.2012.754920.

[21] "The theory: putting more police on the streets prevented crime". Vox. 2015-06-14. Retrieved 2017-07-30.

[22] "Have Changes in Policing Reduced Violent Crime? - Crime & Justice Research Alliance". Crime & Justice Research Alliance. Retrieved 2017-07-30.

[23] Levitt, Steven D. (2004). "Understanding Why Crime Fell in the 1990s: Four Factors that Explain the Decline and Six that Do Not". Journal of Economic Perspectives. 18 (1): 163–190. doi:10.1257/089533004773563485. ISSN 0895-3309.

[24] MESSNER, STEVEN F.; GALEA, SANDRO; TARDIFF, KENNETH J.; TRACY, MELISSA; BUCCIARELLI, ANGELA; PIPER, TINKA MARKHAM; FRYE, VICTORIA; VLAHOV, DAVID (May 2007). "POLICING, DRUGS, AND THE HOMICIDE DECLINE IN NEW YORK CITY IN THE 1990s". Criminology. 45 (2): 385–414. doi:10.1111/j.1745-9125.2007.00082.x.

[25] Farrell, Graham; Tseloni, Andromachi; Mailley, Jen; Tilley, Nick (22 February 2011). "The Crime Drop and the Security Hypothesis". Journal of Research in Crime and Delinquency. 48 (2): 147–175. doi:10.1177/0022427810391539.

[26] Farrell, Graham (2015-11-27). "Attempted Crime and the Crime Drop". International Criminal Justice Review. 26 (1): 21–30. doi:10.1177/1057567715615392.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

[17]

[18]

[19]

[20]

[21]

[22]

[23]

[24]

[25]

[26]

@@ Line 1: / Line 1: @@
 {{Criminology and penology}}
-The '''crime drop''' or '''crime decline''' is a pattern observed in many countries whereby rates of many types of [[crime]] declined by 50% or more beginning in the early 1990s.<ref name=cj>{{cite journal|last1=Farrell|first1=Graham|last2=Tilley|first2=Nick|last3=Tseloni|first3=Andromachi|title=Why the Crime Drop?|journal=Crime and Justice|date=September 2014|volume=43|issue=1|pages=421–490|doi=10.1086/678081}}</ref> In the United States, for example, violent crime rates have fallen by over 50% in many major U.S. cities since these rates peaked in the early 1990s; in [[New York City]], these rates had dropped by 75% from the early 1990s to 2010.<ref>{{Cite web |url=http://www.motherjones.com/environment/2016/02/lead-exposure-gasoline-crime-increase-children-health/ |title=Sick Kids Are Just the Beginning of America’s Lead Crisis |last=Drum |first=Kevin |date=2016-02-11 |website=Mother Jones |language=en-US |access-date=2017-07-30}}</ref>
+The '''crime drop''' or '''crime decline''' is a pattern observed in many countries whereby rates of many types of [[crime]] declined by 50% or more beginning in the early 1990s.<ref name=cj>{{cite journal|last1=Farrell|first1=Graham|last2=Tilley|first2=Nick|last3=Tseloni|first3=Andromachi|title=Why the Crime Drop?|journal=Crime and Justice|date=September 2014|volume=43|issue=1|pages=421–490|doi=10.1086/678081}}</ref> In the United States, for example, violent crime rates have fallen by over 50% in many major U.S. cities since these rates peaked in the early 1990s; in [[New York City]], these rates had dropped by 75% from the early 1990s to 2010.<ref>{{Cite web |url=http://www.motherjones.com/environment/2016/02/lead-exposure-gasoline-crime-increase-children-health/ |title=Sick Kids Are Just the Beginning of America’s Lead Crisis |last=Drum |first=Kevin |date=2016-02-11 |website=Mother Jones |language=en-US |access-date=2017-07-30}}</ref> In the United States, a second decline in the crime rate was also observed, with [[homicide]] rates declining first from 1994 to 2002, and then again from 2007 to 2011.<ref>{{Cite journal |last=Parker |first=Karen F. |last2=Mancik |first2=Ashley |last3=Stansfield |first3=Richard |date=May 2017 |title=American crime drops: Investigating the breaks, dips and drops in temporal homicide |url=https://www.ncbi.nlm.nih.gov/pubmed/28364841 |journal=Social Science Research |volume=64 |pages=154–170 |doi=10.1016/j.ssresearch.2016.09.029 |issn=1096-0317 |pmid=28364841}}</ref>
 ==Internationally==
 On average, international crime declines from 1995 to 2004 were as follows: 77.1 percent in theft from cars, 60.3 percent in theft from person, 26.0 percent in burglary, 20.6 percent in assault and 16.8 percent in car theft.<ref>{{Cite journal |last=Tseloni |first=Andromachi |last2=Mailley |first2=Jen |last3=Farrell |first3=Graham |last4=Tilley |first4=Nick |date=2010-09-01 |title=Exploring the international decline in crime rates |url=http://journals.sagepub.com/doi/10.1177/1477370810367014 |journal=European Journal of Criminology |language=en |volume=7 |issue=5 |pages=375–394 |doi=10.1177/1477370810367014}}</ref> The crime drop since the early 1990s has occurred in many countries, including the United States, the [[United Kingdom]],<ref>{{Cite web |url=https://www.theguardian.com/uk/2013/jan/24/fall-uk-crime-rate-baffles-experts |title=Fall in UK crime rate baffles experts |last=Travis |first=Alan |last2=editor |first2=home affairs |date=2013-01-24 |website=The Guardian |language=en-GB |access-date=2017-07-30}}</ref> and [[New Zealand]].<ref>{{Cite journal |last=Farrell |first=Graham |date=2013-09-22 |title=Five tests for a theory of the crime drop |url=https://crimesciencejournal.springeropen.com/articles/10.1186/2193-7680-2-5 |journal=Crime Science |language=En |volume=2 |issue=1 |pages=5 |doi=10.1186/2193-7680-2-5 |issn=2193-7680}}</ref> However, no overall crime decline occurred in Western Europe during this period.<ref>{{Cite journal |last=Aebi |first=Marcelo F. |last2=Linde |first2=Antonia |date=2010-12-01 |title=Is There a Crime Drop in Western Europe? |url=https://link.springer.com/article/10.1007/s10610-010-9130-y |journal=European Journal on Criminal Policy and Research |language=en |volume=16 |issue=4 |pages=251–277 |doi=10.1007/s10610-010-9130-y |issn=0928-1371}}</ref>
@@ Line 9: / Line 9: @@
 ===Drug use and demand===
 [[Alfred Blumstein]] argues that part of the drop in the United States' violent crime rate is due to declining demand for [[crack cocaine]].<ref>{{Cite news |url=http://www.bbc.com/news/world-us-canada-13799616 |title=US crime figures: Why the drop? |last=Geoghegan |first=Tom |date=2011-06-21 |work=BBC News |access-date=2017-07-30 |language=en-GB}}</ref> A 2014 report by the [[Home Office]] stated that changes in demand for illegal drugs (specifically, [[heroin]]) were a major contributor to the crime drop in the United Kingdom.<ref>{{Cite news |url=https://www.theguardian.com/uk-news/2014/aug/31/tough-case-mystery-britains-falling-crime-rate |title=Tough case to crack: the mystery of Britain's falling crime rate |last=Cobain |first=Ian |date=2014-08-31 |work=The Guardian |access-date=2017-07-30 |language=en-GB |issn=0261-3077}}</ref>
+===Economic factors===
+The mainstream view among criminologists is that unemployment and poverty are strongly related to crime, because a decrease in opportunities for legal employment, in theory, should increase the frequency of illegal employment.<ref>{{Cite web |url=https://www.vox.com/cards/crime-rate-drop/economy-affect-crime |title=The theory: the economy got better and crime got less appealing |date=2015-06-14 |website=Vox |language=en |access-date=2017-11-18}}</ref><ref name=wilson>{{Cite news |url=https://www.wsj.com/articles/SB10001424052702304066504576345553135009870 |title=Hard Times, Fewer Crimes |last=Wilson |first=James Q. |date=2011-05-28 |work=Wall Street Journal |access-date=2017-11-18 |language=en-US |issn=0099-9660}}</ref> Multiple studies of the United States, for example, have found that the improvement of the American economy coincided with a drop in crime throughout the 1990s.<ref>{{Cite book |url=https://books.google.ie/books?id=bL5PFduoHEMC |title=The International Crime Drop: New Directions in Research |last=Dijk |first=Jan van |last2=Tseloni |first2=A. |last3=Farrell |first3=G. |date=2012-11-14 |publisher=Springer |isbn=9781137291462 |pages=203 |language=en}}</ref> A 2015 Brennan Center for Justice report, however, estimated that no more than 5 percent of the 1990s crime drop in the United States was attributable to changes in unemployment.<ref>{{Cite magazine |last=Ford |first=Matt |date=2016-04-15 |title=What Caused the Great Crime Decline in the U.S.? |url=https://www.theatlantic.com/politics/archive/2016/04/what-caused-the-crime-decline/477408/ |magazine=The Atlantic |language=en-US}}</ref> The view that higher unemployment rates cause higher crime rates has also been challenged by the fact that the United States crime rate reached a 40-year low in 2010, despite America's lagging economy.<ref name=wilson/>
 ===Immigration===
 Studies of the United States have shown that increases in the concentration of immigrants are associated with decreases in violent crime rates, especially [[homicide]] and [[robbery]]. This relationship suggests that increasing immigration to the United States may be responsible for part of the recent drop in violent crime rates in the United States.<ref>{{cite journal|last1=STOWELL|first1=JACOB I.|last2=MESSNER|first2=STEVEN F.|last3=MCGEEVER|first3=KELLY F.|last4=RAFFALOVICH|first4=LAWRENCE E.|title=IMMIGRATION AND THE RECENT VIOLENT CRIME DROP IN THE UNITED STATES: A POOLED, CROSS-SECTIONAL TIME-SERIES ANALYSIS OF METROPOLITAN AREAS|journal=Criminology|date=August 2009|volume=47|issue=3|pages=889–928|doi=10.1111/j.1745-9125.2009.00162.x}}</ref><ref>{{cite journal|last1=Wadsworth|first1=Tim|title=Is Immigration Responsible for the Crime Drop? An Assessment of the Influence of Immigration on Changes in Violent Crime Between 1990 and 2000|journal=Social Science Quarterly|date=June 2010|volume=91|issue=2|pages=531–553|doi=10.1111/j.1540-6237.2010.00706.x}}</ref>
 ===Incarceration===
-A 2015 [[Brennan Center for Justice]] report found that increased incarceration was responsible for about 5% of the crime drop in the United States during the 1990s, and for essentially none of the crime drop there since 2000.<ref name=atlantic/> Commentators and academics who question the role of incarceration in the crime drop have noted that [[Canada]]'s crime rates followed similar trends as those in the United States during the 1990s; in contrast, Canada's incarceration rate did not change significantly during this time, while that of the United States increased significantly.<ref name=cjc>{{Cite journal |last=Ouimet |first=Marc |date=2002 |title=Explaining the American and Canadian Crime Drop in the 1990's |url=http://heinonline.org/HOL/LandingPage?handle=hein.journals/cjccj44&div=5&id=&page= |journal=Canadian Journal of Criminology}}</ref>
+A 2015 [[Brennan Center for Justice]] report found that increased incarceration was responsible for about 5% of the crime drop in the United States during the 1990s, and for essentially none of the crime drop there since 2000.<ref name=atlantic/> Commentators and academics who question the role of incarceration in the crime drop have noted that [[Canada]]'s crime rates followed similar trends as those in the United States during the 1990s; in contrast, Canada's incarceration rate did not change significantly during this time, while that of the United States increased significantly.<ref name=cjc>{{Cite journal |last=Ouimet |first=Marc |date=2002 |title=Explaining the American and Canadian Crime Drop in the 1990's |url=http://heinonline.org/HOL/LandingPage?handle=hein.journals/cjccj44&div=5&id=&page= |journal=Canadian Journal of Criminology}}</ref> In 2009, [[Steven Messner]] and [[Richard Rosenfeld]] found that incarceration was negatively related to burglary rates "...only after unusual policy interventions, such as Italy's 2006 clemency measure that dramatically reduced the size of its prison population."
 ===Policing===
 Some have proposed that changes in policing practices (e.g. the adoption of [[broken windows policing]]) were responsible for the crime drop in the United States, especially in New York City.<ref>{{Cite news |url=http://nypost.com/2016/07/12/new-yorks-latest-crime-drop-proves-yet-again-that-broken-windows-policing-works/ |title=New York’s latest crime drop proves yet again that Broken Windows policing works |last=Board |first=Post Editorial |date=2016-07-13 |access-date=2017-07-30}}</ref><ref>{{cite journal|last1=Weisburd|first1=David|last2=Telep|first2=Cody W.|last3=Lawton|first3=Brian A.|title=Could Innovations in Policing have Contributed to the New York City Crime Drop even in a Period of Declining Police Strength?: The Case of Stop, Question and Frisk as a Hot Spots Policing Strategy|journal=Justice Quarterly|date=11 January 2013|volume=31|issue=1|pages=129–153|doi=10.1080/07418825.2012.754920}}</ref><ref>{{Cite web |url=https://www.vox.com/cards/crime-rate-drop/more-police-less-crime |title=The theory: putting more police on the streets prevented crime |date=2015-06-14 |website=Vox |language=en |access-date=2017-07-30}}</ref> However, Canada did not change its policing practices significantly prior to their crime drop, which casts doubt on the extent to which policing was responsible for this phenomenon.<ref name=cjc/> Some of the most popular claims about policing reducing violent crime are not supported by the evidence.<ref>{{Cite web |url=http://crimeandjusticeresearchalliance.org/research/have-changes-in-policing-reduced-violent-crime/ |title=Have Changes in Policing Reduced Violent Crime? - Crime & Justice Research Alliance |website=Crime & Justice Research Alliance |language=en-US |access-date=2017-07-30}}</ref>