violent riots
control the riots
cause riots
anti-riot police
riot control
A: What happened in the downtown area?
A：市中心发生了什么事？
B: There were massive riots due to the new policy.
B：由于新政策的原因，爆发了大规模的骚乱。
1) 暴乱，骚乱
2) 狂欢，狂乐
3) 扰乱秩序
1. 暴乱，骚乱
noun
1. violent disturbances of the peace by a crowd
Synonym: disturbances, unrest
verb
1. to take part in a riot