Traffic cone method
In 2019, Hong Kong protesters invented a way of using traffic cones to dispose tear gas when riot police are attempting to disperse a crowd. The method works by placing a traffic cone over the gas canister to trap the gas inside the cone and then by dousing the canister with water through an opening in the top of the cone. The method has been used at protests around the world, including in Chile and the United States, after videos on social media spread of the method being used during the Hong Kong protests.