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Tear gas was used in at least 100 cities during the 2020 protests that took place in the U.S. [67] In Portland, Oregon alone, tear gas was used more than 100 times in a two-week period and there were at least two nights in which it was used more than twenty times. [68]
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.
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.
Law enforcement officials shy away from describing crowd-dispersing chemical tools as tear gas; it evokes police gassing citizens or the horrors of war. But giving those tools a more antiseptic ...
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.
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.
"The tear gas was used Sunday [May 31] when they had to clear H Street to allow the fire department to come in to save St. John's Church. That's when tear gas was used." [150] Donald Trump's presidential campaign demanded news outlets retract reports of "tear gas" use. [151] Trump called the reports "fake" and said "they didn't use tear gas." [152]
President Trump defended the use of tear gas at the Mexican border to repel a crowd of migrants that tried to storm across the border.