Nah I gotta throw the red flag. You say blues wasn't subversive because it wasn't violent, missing the point. Blues was subversive because it was black music and often discussed topics religious people deemed to be satanic. How do you think older white people reacted to the story and music of Robert Johnson?
Jazz was viewed as subversive. Not the big band, white jazz of the 50s. The drug induced, BLACK jazz of the 50s and 60s was heavily criticized and outright banned in many parts of the US.
The most popular rock music in the 60s and 70s was heavily influenced by drug cultures of the time (psychedelics, weed, etc) and it bled into the music. Alongside free love ideals, leading to an increase in sexual content in music. The Beatles, Jimi Hendrix, Led Zeppelin, Rolling Stones, etc were all accused of convincing teenagers to use drugs and have sex. And all of those artists were more popular than the straight laced, goody two-shoes music of the 1950s. And lets not forget the accusations of satanic music that dogged a lot of rock at the time. Especially Led Zeppelin, some of their lyrics, and the imagery/runes (Zoso).
By the 80s and 90s we got to straight up satanic panic over the drug use, violence, and "demonic" lyrics of rock and metal. You claim the music wasn't violent but have you listened to any metal from that era?
Slayer was sued for allegedly influencing murders based on the song.
No violence huh?
Metal and rock were censored and accused of advocating violence throughout the 80s. By the 90s you have entire movements accused of subversion. From grunge to nu metal. Both blamed for school shootings, violence etc based on aggressive lyrics. Multiple bands - Pearl Jam, Korn, Slipnot, etc - were accused of influencing suburban school shootings.
In conclusion let's not pretend this is only a phenomena for rap music. The most subversive music is always going to attract young boys, teens, and young men. Nor did I just "cherry pick" a few moments. Grunge and nu metal were the most seminal genres of rock in the 90s and early 00s. Metal and hard rock dominated the 80s. And drug rock dominated the 70s and much of the 60s...