change oppression for oppression; replace one tyranny by another ? ～兮，不知其非矣。(《史記·伯夷列傳》) They are changing oppression for oppression,and do not know theirerror.
以暴易暴
pit violence against violence;replace one tyranny or despotic rule by another
以暴易暴yǐ bào yì bào
以：用；暴：殘暴；易：更換，替換。形容用殘暴代替殘暴。replace one tyranny by another, change one tyranny for another