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Concept
Riot control
Summary
Riot control measures are used by law enforcement, military, paramilitary or security forces to control, disperse, and arrest people who are involved in a riot, unlawful demonstration or unlawful protest.
If a riot is spontaneous and irrational, actions which cause people to stop and think for a moment (e.g. loud noises or issuing instructions in a calm tone) can be enough to stop it. However, these methods usually fail when there is severe anger with a legitimate cause, or the riot was planned or organized. Riot control personnel have long used less lethal weapons such as batons and whips to disperse crowds and detain rioters. Since the 1980s, riot control officers have also used tear gas, pepper spray, rubber bullets, stun grenades, and electric tasers. In some cases, riot squads may also use Long Range Acoustic Devices, water cannons, armoured fighting vehicles, aerial surveillance, police dogs or mounted police on horses. Persons performing riot control typically wear protective equipment such as riot helmets, face visors, body armor (vests, neck protectors, knee pads, etc.), gas masks and riot shields.
There have been cases where lethal weapons are used to violently suppress a protest or riot, as in the Nika Riots in the Roman Empire, Boston Massacre, Haymarket Massacre, Banana Massacre, Hungarian Revolution of 1956, Kent State Shootings, Soweto Uprising, Sharpeville massacre, Mendiola Massacre, Bloody Sunday (1905), Ponce massacre, Bloody Sunday (1972), 1989 Tiananmen Square protests, 2017 Venezuelan protests, 2018–2019 Gaza border protests, Citizenship Amendment Act protests, 2022 Sri Lankan protests, 2022 Kazakh unrest and Mahsa Amini protests.
Maintaining order during demonstrations and quenching riots has always been a challenge for governments and administrations. Until early in the 20th century, no dedicated force really existed in most countries and the traditional response when the regular police force proved inadequate was to call upon the army, often with disastrous results: either fraternization or use of excessive violence.
Official source
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