AP FACT CHECK: Trump denies tear gas use despite evidence

President 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 officials shy away from describing crowd-dispersing chemical tools as tear gas; it evokes police gassing citizens or the horrors of war. Federal institutions such as the Centers for Disease Control and Prevention and the U.S. Army Medical Research Institute of Chemical Defense have listed tear gas as the common term for riot-control agents.

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