agent provocateur

1. N-COUNT An agent provocateur is a person who is employed by the government or the police to encourage certain groups of people to break the law, so they can arrest them or make them lose public support. 卧底; 坐探; 受雇于政府或警方的怂恿某些群体违法作乱，以便使他们失去公众支持的人

Agents provocateurs may seek to discredit the opposition. 卧底可能会设法败坏反对派的名誉。