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Kettling (also known as containment or corralling) is a police tactic for controlling large crowds during demonstrations or protests. It involves the formation of large cordons of police officers who then move to contain a crowd within a limited area. Protesters are left only one choice of exit controlled by the police – or are completely prevented from leaving, with the effect of denying the protesters access to food, water and toilet facilities for a time period determined by the police forces.
The tactic has proved controversial, in part because it has resulted in the detention of ordinary bystanders as well as protesters. In March 2012 kettling was ruled lawful by the European Court of Human Rights following a legal challenge.
The term "kettle" is a metaphor, likening the containment of protesters to the containment of heat and steam within a domestic kettle. Its modern English usage may come from "kessel" – literally a cauldron, or kettle in German – that describes an encircled army about to be annihilated by a superior force. A cauldron is expected to be "boiling" with combat activity, the large enemy forces still quite able to offer "hot" resistance in the initial stages of encirclement, and so are to be contained, but not engaged directly.
To avoid allusions to military confrontation, kettling is sometimes described as "corralling," likening the tactic to the enclosure of livestock. Although large groups are difficult to control, this can be done by concentrations of police. The tactic prevents the large group breaking into smaller splinters that have to be individually chased down, thus requiring the policing to break into multiple groups. Once the kettle has been formed, the cordon is tightened, which may include the use of baton charges to restrict the territory occupied by the protesters. The cordon is then maintained for a number of hours: the ostensible aim is to leave would-be "violent" protesters too tired to do anything but want to go home.
Kettling has been criticized for being an indiscriminate tactic which leads to the detention of law-abiding citizens and innocent bystanders. In some cases protesters are reported to have been denied access to food, water and toilet facilities for long periods. Further criticism has been made that in some instances the tactic has been used to foment disorder with the aim of changing the focus of public debate. In some countries the tactic has led to legal challenges on the grounds of human rights violations.
An early example of kettling was by German police in 1986. During a demonstration by anti-nuclear protesters at Heiligengeistfeld, Hamburg on 8 May, Hamburg Police cordoned approximately 800 people into a "kettle" for several hours. German kettling tactics distinguish a stationary form of detention (Polizeikessel) and a mobile form, in which protesters are enclosed by a mobile police cordon while they march (Wanderkessel). These types of police cordon were also regularly used in the UK before the tactic got refined at the N30 protest (see below), and dubbed a kettle.
Kettling has been challenged in the German courts on several occasions. The 1986 Hamburger Kessel was ruled unlawful by the administrative court of Hamburg. The district court found German police guilty of wrongful deprivation of personal liberty.
Following an anti-nuclear protest in 2002 in Hitzacker, Lower Saxony, a protester took a case to court because she had been denied access to toilets when she was held within a police kettle. The district court found that she had been handled inhumanely and that the police had acted unlawfully.
On June 27, 2010, 200 persons, including protesters, bystanders and news reporters, were kettled in Toronto at the intersection of Queen St. and Spadina Ave. during the G20 summit protests. Several hundred people were also kettled outside of the Novotel Hotel on the Esplanade and arrested. The following year the Toronto Police Department swore to never use kettling again. In August 2015, police superintendent David 'Mark' Fenton was convicted of two charges of unlawful arrest and one charge of discreditable conduct, disciplinary offences under the Police Act, for ordering the kettling in 2010. However, the judge convicting Fenton also made it clear that "That said, containing or kettling is not illegal".
On March 15, 2011, 250–300 protesters in Montréal were kettled on St-Denis just north of Mont Royal during the Annual March Against Police Brutality. Police used stun grenades, riot gear, and horses to kettle the crowd.
On March 15, 2013, at the annual police brutality march, the police kettled a group of protesters on Ste-Catherine street in Montréal after the march was declared illegal for not presenting an itinerary before the protest. After almost two hours of attempting to break up the groups protesting, the police closed in and arrested anyone caught in the kettle. At the end of the evening, police stated that there were around 250 arrests, 2 injured police officers and one protester who was unwell.
Between 250 and 1000 non-violent protesters at the 2009 United Nations Climate Change Conference in Copenhagen were kettled by police. A police spokesman said that the detainment was necessary to avoid disorder.
Finnish anarchist demonstration Smash Asem was prevented from taking place when 200 riot police and hundreds of other police and Finnish Border Guard personnel kettled around 300 to 500 demonstrators and bystanders in front of Kiasma in downtown Helsinki for over 3 hours on 9 September 2006.
On the Guillotière bridge In Lyon, on the 20 October 2010, a few hundred protesters were kettled for several hours. The next day in Place Bellecour, about 500 citizens and protesters defending public pension were kettled for six hours without food or water by both the police and the military. They were prevented from marching, and tear gas and water cannons were used.
On 16 May 2012, Acampada Sol called for a cacerolazo because the Spanish risk premium exceeded 500 points that day. The demonstrators were marching through Calle Alcalá, in Madrid, when police forces surrounded them for more than 30 minutes; after the kettled protesters asked for solidarity through the Internet, several additional hundred people gathered outside of the kettle. Around 500 demonstrators waited seated on the pavement until the police forces finally removed the blockade, allowing them to leave the area and return to Puerta del Sol. During the peaceful demonstrations in Catalonia, following the arrest of exiled president Carles Puigdemont by German authorities in 2018, police used kettling as a way of breaking up the protests.
Parliament Square Disability Rights Demonstration, 1995
The kettling tactic was used in the UK against disabled people during a Disability Rights Demonstration in Parliament Square, London, in October 1995. 
N30 anti-WTO demonstration, 1999
The kettling tactic was used in the UK at the N30 anti-WTO protest at Euston station, London (parallel to the shut-down of the meeting in Seattle) on November 30, 1999. It was a development of previously used police cordoning tactics - the difference was the long length of time, constant impermeability and the small size of the kettle.
May Day 2001
The tactic was used in the UK by the London Metropolitan Police during the May Day riots of 2001 to contain demonstrators. However, the action also resulted in large numbers of bystanders as well as peaceful demonstrators being detained in Oxford Circus.
G8 summit, 2005
Kettling was used once again during the 2009 G-20 London summit protests outside the Bank of England, as part of the police Territorial Support Group's "Operation Glencoe". When police started to allow protesters to leave the kettle, they were photographed by Forward Intelligence Teams and told to give their names and addresses. Some refused to do so and were forced back into the kettle by police. A number of complaints over the tactic were subsequently made to the Independent Police Complaints Commission. Bob Broadhurst, the commanding officer during the protests, said that, "kettling was the best option" to counter the potential of widespread disruption by protesters".
On April 15, 2009, Scotland Yard ordered a review of these tactics. Criticism of the policing of demonstrations has been increasing, and amateur video footage which recorded two incidents of violent police behaviour, notably the death of Ian Tomlinson, brought police tactics into the media spotlight. The incidents were said by Sir Paul Stephenson, Metropolitan Police Commissioner, to be "clearly disturbing", and Stephenson ordered the review to consider whether the tactic is "appropriate and proportionate". The video footage also showed that police officers were concealing their shoulder identification numbers whilst on duty.
An inquiry was held by the Independent Police Complaints Commission (IPCC) into an incident during the G20 protests, in which a woman held in a kettle suffered injuries from police action and subsequently experienced a suspected miscarriage. The inquiry concluded in August 2009 that the Metropolitan Police should review its crowd control methods, including the tactic of kettling.
Denis O'Connor, Her Majesty's Chief Inspector of Constabulary, said in a report concerning the policing of the G20 protests that some police commanders did not understand the House of Lords' ruling regarding kettling. He also stated that containing protesters in a kettle was "inadequate" and belonged to a "different era" of policing. He did not suggest that kettling should be abandoned but rather that the methods must be adapted so that peaceful protesters and bystanders are able to leave the kettle. The report also commissioned a survey, conducted by MORI which found that the majority of the UK public do feel that the use of kettling is appropriate in some situations. Depending on the circumstances, between 10% and 20% of those questioned feel that it is never appropriate to contain people in this way.
In April 2011, the High Court of Justice ruled that kettling on that occasion was illegal, and it set out new guidelines as to when police were permitted to kettle protesters. This means that the police "may only take such preventive action as a last resort catering for situations about to descend into violence". Police would still legally be allowed to kettle if they had reason to believe that violence would break out.[original research?]
Student protests, 2010
Kettling was used during the 24 November 2010 student protest in London and in various other locations around the country. Guardian blogger Dave Hill thought the kettling was in retrospect "probably inevitable", after the protest two weeks before had led to damage at the Conservative party headquarters. In July 2011 three school children challenged the use of kettling of children at this protest. They sought a judicial review in the High Court, arguing it broke the laws of the European Convention on Human Rights, the United Nations Convention on the Rights of the Child and the Children Act 2004, mainly the right to protest and the safety of children.
Kettling was used to contain student protesters in Parliament Square on 9 December 2010 and thereafter on Westminster Bridge. Protesters were trapped in Trafalgar Square and other landmarks for up to nine hours. An anaesthetist from Aberdeen Royal Infirmary working as part of a field hospital said that there was a serious health and safety risk to people trapped in the kettle and some suffered crush injuries whilst others were nearly pushed off Westminster Bridge into the freezing Thames, likening it to the Hillsborough disaster.
Anti-Cuts protests, 2011
Kettling was again used at the March 2011 anti-cuts protest in London. Activists were given assurances by Metropolitan police that they would be shown to safety after the protest, which was described as non-violent and sensible. Once outside, the protesters were kettled, handcuffed and taken into custody.
In 2012, kettling was deemed lawful, overturning a previous High Court ruling. The ruling was immediately criticised by protesters and their lawyers, who plan to take the matter to the Supreme Court.
Following the use of "kettling" during the May Day protest in 2001, two people who had been corralled by the police at Oxford Circus sued the Metropolitan Police for wrongful detention, alleging that it was in breach of the European Convention of Human Rights, and that they had been held without access to food, water or toilets. The pair lost their court action in 2005, and their appeal failed in 2007 when the Court of Appeal backed the High Court ruling.
In 2009, Austin v Commissioner of Police of the Metropolis, a ruling by the House of Lords, decided that the High Court was entitled to take into consideration the "purpose" of the deprivation of liberty before deciding if human rights laws applied at all. Summing up, Lord Hope said:
There is room, even in the case of fundamental rights as to whose application no restriction or limitation is permitted by the Convention, for a pragmatic approach which takes full account of all the circumstances.
A plaintiff from the 2001 protest, along with three non-protesting members of the public who had been kettled by police, took an appeal to the European Court of Human Rights, claiming that kettling violated Article 5 of the European Convention on Human Rights, the right to liberty and security. It was reported:
Austin, who the court accepted was a lawful and peaceful demonstrator prevented by her detention from collecting her child, is to take her case to the European Court of Human Rights. It is to be hoped the ECHR will look again at the question of whether the "balance" and "public safety" is all on the side of allowing the police to carry out long containments or whether such imprisonment does not after all breach fundamental rights.
In March 2012 the Court ruled that kettling was lawful and that the Metropolitan Police were entitled to detain groups of people as "the least intrusive and most effective means to protect the public from violence". On the issues related to the European Convention on Human Rights, the court ruled:
Article 5 did not have to be construed in such a way as to make it impracticable for the police to fulfil their duties of maintaining order and protecting the public.— Grand Chamber, European Court of Human Rights, Ruling, March 2012
Anti-Globalization movement, Washington D.C., 2002
As part of ongoing anti-globalization demonstrations and early demonstrations against the impending invasion of Iraq, several hundred protesters and bystanders were kettled in Pershing Park and subsequently arrested, resulting in large, sometimes record-breaking class-action settlements and ongoing litigation to restrict the practice.
Iraq War Protest, Chicago, 2003
In 2012 the City of Chicago agreed to a $6.2 million class-action settlement over the mass arrest of protesters and passersby kettled during a massive protest marking the start of the 2003 invasion of Iraq. After previously halting and turning around as many as 8,000 marchers near the intersection of Oak Street and Michigan Avenue, for several hours Chicago police unlawfully detained over 1,000 people kettled on Chicago Avenue between Michigan and Mies van der Rohe Way, ultimately arresting over 900 people without probable cause.
Republican National Convention, New York City, 2004
Occupy Wall Street, 2011
UC Berkeley Student March, Berkeley 2014
Kettling, in addition to tear gas and rubber bullets, were used by police in an attempt to disperse protesters at the University of California Berkeley. The students were protesting decisions by grand juries in New York City and Ferguson, Missouri, to not indict police officers whose actions led to the deaths of Eric Garner and Michael Brown, respectively.
Presidential Inauguration of Donald Trump, 2017
Police officers in the District of Columbia used kettling on a large group of protesters at the intersection of 12th and L streets on January 20, 2017. Among those detained and later charged were several journalists, who were accused of felony rioting.
St. Louis, 2017
The St. Louis Metropolitan Police Department (SLMPD) and other agencies (including the St. Louis County Police Department (SLCPD) and the Missouri State Highway Patrol (MSHP)), conducted two kettles in St. Louis on September 17 and October 3 during the protests of 2017. Over one hundred people were arrested in each instance. Ten journalists were arrested, six of these allege being beaten and/or pepper sprayed, and an undercover police officer was also arrested and beaten. Riot police and bicycle units pepper sprayed and beat many people on September 17, triggering over a dozen lawsuits and a FBI/DOJ investigation that led to federal indictments of 4 SLMPD officers who put undercover officer Luther Hall in the hospital, who himself previously was sued twice for beating a disabled man and for civil rights violations of protesters.
- 2009 G-20 London summit protests
- Crowd control
- False imprisonment
- Forward intelligence team
- Pincer movement
- Riot control
- Snatch squad
- Sukey, an organization which emerged in Britain on 28 January 2011 to improve communications among participants in student demonstrations. Its immediate aim was to counteract the police tactics of kettling.
- Territorial Support Group
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Polizeiterror gegen AKW-Gegner/innen - 800 Menschen einen Tag eingekesselt (Police terror against anti-nuclear activists - 800 people kettled in one day)
- See also Polizeikessel and Wanderkessel (German Wikipedia)
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- THE CARNIVAL CONTINUES... Lydia Molyneaux
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-  UKHL 5
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