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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.
This training continues in subsequent career stages. Many law enforcement agencies also use CS gas as a riot control device. Since 2008, the SPVM police force in Montreal has increased its use of CS Gas for crowd control, although Police policy is to only use it as a last resort.
The Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare, usually called the Geneva Protocol, is a treaty prohibiting the use of chemical and biological weapons in international armed conflicts.
Law enforcement agencies use strategies such as tear gas because it is unlikely to kill someone compared to a gun, said Sid Heal, a retired commander with the Los Angeles Sheriff's Department.
Donald Trump and some of his supporters are claiming authorities did not use tear gas against people in a crackdown outside the White House this week.
Tear gas in use in France 2007 Exploded tear gas canister in the air in Greece. Tear gas, also known as a lachrymatory agent or lachrymator (from Latin lacrima ' tear '), sometimes colloquially known as "mace" after the early commercial self-defense spray, is a chemical weapon that stimulates the nerves of the lacrimal gland in the eye to produce tears.
Tear gas, classified by the United Nations as a chemical weapon, is so common that people often head to protests with gas masks or homemade solutions like a bandana soaked in water.
Texas law makes it legal for an individual to possess a small, commercially sold container of pepper spray for personal self-defense. However, Texas law otherwise makes it illegal to carry a "Chemical dispensing device". [89] Virginia: Code of Virginia § 18.2-312. Illegal use of tear gas, phosgene, and other gases.