heavy metal

i was watching a report on some channel i forgot about heavy metal. Twisted Sister was a lead part of this show, where the singer suggested a lot of things to the camera. I guess before my time (1986) or so, some Gore woman was upset about metal music. This lead to the famous "Parental Advisory" label on CD's that have bad language. Assuming this would only warn kids, it just made them more likely to buy the CD due to its intense content.