Qún mó luàn wǔ can describe dancing.
Groups of devils dancing chaotically [ qún mó luàn wǔ ]?
Interpretation: A group of devils jumping about. It is a metaphor for a group of bad people rampaging in the political arena.
Example sentence: The days of social unrest and swarms of demons are long gone.
Near synonyms
Niu Gui Snake Shen [ niú guǐ shé shén ]?
Interpretation: A ghost with a bull's head and a god with a body like a snake. Now it is often used as a metaphor for all kinds of bad people.
Source: Tang Du Mu, "Preface to the Poems of Li He": "Whale and yawn; cow ghosts and snakes and gods; not enough for their illusory and grotesque fantasies."
Example sentence: During the time of the Gang of Four, many intellectuals were branded as rightists and cow ghosts and snakes.