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Riot control agents (sometimes called RCAs) are non-lethal lachrymatory agents used for riot control. Most commonly used riot control agents are pepper spray and various kinds of tear gas. These chemicals enable to disperse a protesting or rioting crowd, or to clear a building. [ 11 ]
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The compound 2-chlorobenzalmalononitrile (also called o-chlorobenzylidene malononitrile; chemical formula: C 10 H 5 ClN 2), a cyanocarbon, is the defining component of the lachrymatory agent commonly referred to as CS gas, a tear gas which is used as a riot control agent, and is banned for use in warfare due to the 1925 Geneva Protocol.
Knock-down test of a 109 mph (175 km/h; 49 m/s) vortex ring gun. The vortex ring gun is an experimental non-lethal weapon for crowd control that uses high-energy vortex rings of gas to knock down people or spray them with marking ink or other chemicals.
The app publisher announced that downloads had increased forty-fold over the month of August, with 60,000 app installations in the last week of August alone, most of them from Hong Kong. [245] In the 2014 Hong Kong protests , FireChat had been used for smartphone ad hoc networking.
In addition to its use in warfare, the bayonet has a long history as a weapon employed in the control of unruly crowds. [1] Prior to the advent of less-lethal weapons, police and military forces called upon for riot control were generally limited to firing live ammunition, or using bayonets or sabre charges.
The snatch squad in riot control involves several police officers, usually wearing protective riot gear, rushing forwards—occasionally in a flying wedge formation—to break through the front of a crowd, with the objective of snatching one or more individuals from a riot that are attempting to control the demonstration at which they are present.