 In 2017, Amnesty International once again criticized the Bolivarian government's usage of chemical agents, expressing concern of a "red gas" used to suppress protesters in Chacao on 8 April 2017, demanding "clarification of the components of the red tear gas used by state security forces against the opposition demonstrations".Experts stated that all tear gas used by authorities should originally be colorless, noting that the color may be added to provoke or "color" protesters so they can easily be identified and arrested.On 10 April 2017, Venezuelan police fired tear gas at protesters from helicopters flying overhead, resulting with demonstrators running from projectiles to avoid being hit by the canisters.