RIOT

[noun] [C] - a noisy, violent, and uncontrolled public gatheringInner-city riots erupted when a local tax was increased.Police in riot gear (= protective clothes and equipment) lined up at the end of the street.The soldiers held up their riot shields and advanced slowly towards the crowd.(informal) A riot is also a very amusing or entertaining occasion, event, or person.The festival was a riot.We had a riot of a time at the party.My younger brother's a riot (= very amusing).Riot police were called to the scene to control the angry mob.Jim's roses are a riot of colour(s) (= extremely bright and colourful).