A sports riot is a riot that occurs during or after sporting events. Sports riots occur worldwide.[1][2] Most riots are known to occur after the event is done, but some have been during the game (see football hooliganism). While association football is one of the more well-known triggers for riots, other sports which have triggered riots include ice hockey[3] and motorcycle racing.[1] There are a number of factors believed to influence whether riots occur, including cultural factors; environmental factors such as temperature, darkness, and noise; and witnessing player violence.[1]