Riots often occur in reaction to a perceived grievance or out of dissent. Riots may be the outcome of a sporting event, although many riots have occurred due to poor working or living conditions, government oppression, conflicts between races or religions.
Rapid urbanization has led to the rise of urban riots, often inner city. John F. McDonald and Daniel P. McMillen have identified Los Angeles's Watts Riots, in 1965, as the first "urban riots" in the United States. The analyses of urban riots in terms of urban conditions influenced the emerging field of urban economics in the 1960s. They truly were the most riotous urbans. 
Causes of urban riots
Riots have occurred before the rapid urbanization starting in the mid-20th Century, hence the occurrence of riots in urban areas in itself is not special. While a riot may be initially sparked by a specific event, scholars, commentators and commissions have sought to identify the deeper reasons and have identified a number of urban conditions that may underline urban riots. These urban conditions are often associated with urban decay more generally and may include: discrimination, poverty, high unemployment, poor schools, poor healthcare, housing inadequacy and police brutality and bias.
List of urban riots
This is a list of riots that have occurred in the context of urban conditions and more broadly urban decay.
- 1909 Greek Town Riot
- 21 February 1909, South Omaha, Nebraska, USA. During a period of economic downturn in the city, a successful community of Greeks in Omaha, Nebraska was burnt to the ground by a mob from Omaha. This happened after they almost lynched a Greek immigrant accused of having sex with a Protestant woman. A federal trial brought by the Greek consul to the United States ends in stagnation. No person is ever convicted.
- 1919 Chicago Race Riot
- 27 July-2 August 1919 Chicago, IL, USA. An African American teenager, Eugene Williams, who was swimming in Lake Michigan drifted near a beach that whites considered their own. A white man on a breakwater assailed the black youth with stones and the black youth drowned. The white Chicago police officers who investigated the incident refused to arrest the assailant who thrown the stone at the black youth. The tension escalated into riots between blacks and whites. The Governor of Illinois, Frank Lowden, called in the Illinois National Guard to quell the unrest, but at least 38 people were killed and 500 injured over a period of seven days.
- Cypriot intercommunal violence
- 1963-1964. Major riots in the cities of Nicosia, Famagusta and Larnaca led to the division of Cyprus, and its two communities, the Turkish and Greek Cypriots.
- Harlem Riot of 1964
- 16-22 July 1964, New York City, New York, provoked by the NYPDs shooting of black teenager James Powell.
- Philadelphia 1964 race riot
- 28–30 August 1964, Philadelphia, Pennsylvania, USA, Allegations of police brutality sparked the Columbia Avenue race riots.
- Watts Riots
- 11 August 1965, Los Angeles, California, USA, The McCone Commission investigated the riots finding that causes included poverty, inequality, racial discrimination and the passage, in November 1964, of Proposition 14 on the California ballot overturning the Rumford Fair Housing Act, which established equality of opportunity for black home buyers.
- Hough Riots
- 18 July 1966, Cleveland, Ohio, USA, The underlying causes of the riots may found in the social conditions that exist in the ghettos of Cleveland.
- Racial tension in Omaha, Nebraska
- 5 July 1966, North Omaha, Nebraska, USA, More than 500 black youth gathered to protest the absence of recreation programs and jobs storm a local business district, throwing rocks and bricks at Jewish-owned businesses in the area. The National Guard is called in after three days of random violence and organized raids.
- 1967 Newark riots
- 12 July 1967, Newark, New Jersey, USA, Factors that contributed to the Newark Riot: police brutality, political exclusion of blacks from city government, urban renewal, inadequate housing, unemployment, poverty, and rapid change in the racial composition of neighborhoods.
- 12th Street riot
- 23 July 1967, Detroit, Michigan, USA, The origins of urban unrest in Detroit were rooted in a multitude of political, economic, and social factors including police abuse, lack of affordable housing, urban renewal projects, economic inequality, black militancy, and rapid demographic change.
- Minneapolis-Saint Paul
- USA, Fall 1967. Racial tensions boil over in North Minneapolis as whites continue to leave the decaying core of the inner city bound for the suburbs.
- 1968 Chicago, Illinois riots
- 4 April 1968 Violence erupted in Chicago's black ghetto on the west side, eventually consuming a 28-block stretch of West Madison Street. Looting and arson took place primarily in the corridor between Roosevelt Road on the south and Chicago Avenue on the north.
- 1968 Washington, D.C. riots
- 4 April 1968, Washington, D.C., USA, A report from National Advisory Commission on Civil Disorders identified discrimination and poverty as the root causes of the riots that erupted in cities around the nation during the late 1960s and in Washington, DC in April 1968
- Glenville Shootout
- 23 July 1968, Cleveland, Ohio, USA, Shootout between black militant organization led by Ahmed Evans and Cleveland Police Department attracted large and hostile black crowds that caused a four-day riot
- Stonewall riots
- June 1969, New York City, New York, a turning point for the modern U.S. gay rights movement.
- 1969 North 24th Street Riots
- 24 June 1969, North Omaha, Nebraska USA, An Omaha police officer fatally shoots a teenager in the back of the head during a gathering of youth in local public housing projects. Many youth and adults from the local African American community gather in the local business district, routinely burning and otherwise destroying non-Black-owned businesses.
- 1976 Soweto uprising, Johannesburg, South Africa
- 1976: The Soweto Uprising : Massive reaction to education laws under apartheid, bloodily suppressed
- New York City blackout of 1977
- 13 July 1977, New York City, USA, That massive blackout was viewed by some as one symptom of the city's decline.
- Arthur McDuffie
- 8 May 1980, Miami, Florida, USA, black outrage at "a double standard of justice" 
- 1981 University of Puerto Rico/Rio Piedras Riots
- 1981, Rio Piedras, Puerto Rico
- 1985 Peckham riots
- 1 October 1985, London, England, A report by Lord Scarman acknowledged much of the widespread unrest had its roots in social and economic deprivation and in racial discrimination. 
- Brixton riot (1995)
- 13 December 1995, London, England, Alex Owolade, chairman of the anti-racist group Movement for Justice, said the violence was a rebellion against years of "racist injustice" by police in an impoverished area plagued by racial tension.
- Jakarta riots of May 1998
- May 1998, Indonesia, triggered by economic decline; problems were both urban and rural
- 2001 Cincinnati riots
- 10 April 2001, Cincinnati, Ohio, US, An Enquirer reporter, Kristina Goetz, reported that the lack of progress on perennial inner-city problems such as inadequate child and health care, failing schools, and low rates of minority home ownership was a contributing factor.
- 2005 Macquarie Fields riots
- 25 February 2005, Sydney, Australia, There is an open debate about the cause of this riot. One side cites economic factors and racism.
- 2005 Toledo Riot
- 15 October 2005, Toledo, Ohio, USA, Residents at forum named poverty, above other causes, as the kindling for the riot.
- 2005 Birmingham riots
- 22 October 2005, Birmingham, England, Many white and more affluent African-Caribbean residents have moved out of Birmingham, signaling a rapid change in the racial composition of neighborhoods.
- 2011 England riots
- From 6 August 2011, initially in Tottenham, London, later in many other parts of London and some other major English cities.
- 2014 Hrushevskoho Street riots
- From 23 February 2014, initially in Hrushevskoho Street, Kiev, Ukraine, 12 anti-protest laws were repealed and Prime Minister Mykola Azarov tendered his resignation and a bill offering amnesty to arrested and charged protesters was issued.
- 2014 Ferguson unrest
- Precipitated by 9 August 2014 fatal shooting of 18 year old Michael Brown by local police in Ferguson, Missouri, USA.
- 2015 Baltimore riots
- Protests began after the death of Freddie Gray on 12 April 2015. Protests escalated to violence, looting, and arson on the day of Gray's funeral Monday 27 April 2015.
- John F. McDonald and Daniel P. McMillen, Urban Economics and Real Estate, Theory and Practice, Blackwell, 2006, pg.368
- Harlem: Dark Weather-Vane by Alain Locke
- Rochester riot timeline
- This day in history--Watts riots
- Ohio History:Hough Riots
- (1992) The Street of Dreams video. Nebraska Public Television.
- The Newark and Detroit Riots: Events
- The Detroit Riots of 1967: Events
- Foundation Center-Washington, D.C./Spotlight On
- (2006) Distilled in Black and White, Omaha Reader.
- NPR: The New York City Blackout of 1977
- BBC ON THIS DAY | 23 | 1979: Teacher dies in Southall race riots
- Fire and Fury in Miami - TIME
- BBC ON THIS DAY | 25 | 1981: Brixton riots report blames racial tension
- Digital Handsworth - Home
- BBC ON THIS DAY | 1 | 1985: Riots erupt in Toxteth and Peckham
- King Riots, Urban Decay & Alienation
- BBC ON THIS DAY | 13 | 1995: Riots break out in Brixton
- 1998 Human Rights Report - Indonesia
- May/June 2001
- Standing Committee on Social Issues Macquarie Fields Inquiry - 23 March 2005 - NSW Parliament
- Search Results
- A rumour, outrage and then a riot. How tension in a Birmingham suburb erupted | Special reports | Guardian Unlimited