The US government are using chemical weapons on their own citizens.

[erronis]

11. Hexachlorethane uses from Wikipedia

https://en.wikipedia.org/wiki/Hexachloroethane

Use as smoke agent

Smoke grenades, called hexachloroethane smoke or HC smoke, utilize a mixture containing roughly equal parts of hexachloroethane and zinc oxide and approximately 6% granular aluminium. These smokes are toxic, which is attributed to the production of zinc chloride (ZnCl2).[8][9] According to Steinritz et al., "Due to its potential pulmonary toxicity," zinc chloride producing smoke grenades "have been discharged from the armory of most western countries (...)."[10]

Use as a riot control agent

Most documented uses of HC smoke as a riot control agent have occurred in the United States; its purchase towards that end has occurred in Milwaukee, Denver and Portland.[11]

Federal Protective Services (FPS) and forces from the Department of Homeland Security are believed to have used HC smoke grenades against protesters during various protests in 2020.[12] At the time, journalists photographed numerous smoke canisters labeled "HC", and measured unusually high levels of zinc and chloride in the area. However, FPS communications director Rob Sperling has denied the use of HC smoke, arguing that, of the two organizations, "FPS doesn't have any items that contain HC."[13]

Toxicity

Hexachloroethane is not particularly toxic when taken orally,[14] but is considered to be quite toxic by skin adsorption. The primary effect is depression of the central nervous system.[3] The concentration that is immediately dangerous to life or health is 300 ppm and the permissible exposure limit according to the Occupational Safety and Health Administration is 1 ppm (skin).[14] It is reasonably anticipated to be a carcinogen.[15]