What is the tumultuous disturbance of the public peace by an unlawful assembly of three or more persons in the execution of some private object. To run riot, to act wantonly or without restraint called?

riot — (Law) The tumultuous disturbance of the public peace by an unlawful assembly of three or more persons in the execution of some private object. To run riot, to act wantonly or without restraint. (Webster's 1913.)

Sources