Tear gas is a chemical weapon also known as "demonstration control agents" (DCAs). It's designed to disperse large crowds, typically in outdoor settings. Tear gas contains lachrymatory agents, ...

City officials say a change in wind direction blew residual tear gas from a nearby police training center into a municipal building and caused minor irritation to several ...

A protester lobs back a teargas canister at police during protests against the Finance Bill 2024 in Nairobi on June 25, 2024. [ AFP] For the past two weeks, clouds of acrid smoke have billowed through ...

After a recent safety training gone wrong, San Bruno community members raise health concerns and question protocol for testing chemicals used for crowd control at a jail facility less than half a mile ...