群魔乱舞 qúnmó-luànwǔ
[pandemonium;evil spirits of all kinds dance in a riotous revelry a host of demons dancing in riotous revelry—rogues of all kinds running wild] 比喻许多坏人猖狂活动
亦作“群魔乱舞”。谓众恶徒为非作歹,肆无忌惮。如:清平世界,那容得群魔乱舞。