Music should never be harmless - Robbie Robertson.  
I sometimes put this quote in my signature, but does music ever get too subversive?
I don't think so but they did in the Soviet Union.  

Here's a list published in 1985 by the Komsomol, the Soviet youth organization formed as the All-Union Leninist Young Communist League.  The list circulated for “the purpose of intensifying control over the activities of discoteques.”  It gives the name of the band and the type of propaganda that they were spreading....the little tinkers!


Sex Pistols: punk, violence

B-52s: punk, violence

Madness: punk, violence

Clash: punk, violence

Stranglers: punk, violence

Kiss: neofascism, punk, violence

Crocus: violence, cult of strong personality

Styx: violence, vandalism

Iron Maiden: violence, religious obscuritanism

Judas Priest: anticommunism, racism

AC/DC: neofascism, violence

Sparks: neofascism, racism

Black Sabbath: violence, religious obscuritanism

Alice Cooper: violence, vandalism

Nazareth: violence, religious mysticism

Scorpions: violence

Gengis Khan: anticommunism, nationalism

UFO: violence

Pink Floyd (1983): distortion of Soviet foreign policy ("Soviet agression in Afghanistan")

Talking Heads: myth of the Soviet military threat

Perron: eroticism

Bohannon: eroticism

Originals: sex

Donna Summer: eroticism

Tina Turner: sex

Junior English: sex

Canned Heat: homosexuality

Munich Machine: eroticism

Ramones: punk

Van Halen: anti-soviet propaganda

Julio Iglesias: neofascism

Yazoo: punk, violence

Depeche Mode: punk, violence

Village People: violence

Ten CC: neofascism

Stooges: violence

Boys: punk, violence

Blondie: punk, violence