I don't really know what you mean by rock. I would classify punk, metal, and all their angry friends as rock subgenres. Putting those aside for a minute, the e

I don't really know what you mean by rock. I would classify punk, metal, and all their angry friends as rock subgenres. Putting those aside for a minute, the earliest forms of rock were quite rebellious. Rumble by Link Wray, the 1954 instrumental hit that pioneered the distortion and power chord combo, ended up getting banned in many markets because it was thought to incite delinquency. Today, the tune is bland at best. At this point, I think it's quite hard to rebel culturally. So many different genres have pushed their definition of rebellion so far at this point that it has become exceptionally hard to push the envelope of what is culturally acceptable.