Marilyn Manson.
What he has done is absolutely disgusting. Though the allegations have not been proven (to my knowledge) they are incredibly credible and consistent, and I believe them 100%, and want to do anything to support his victims.. I like to justify listening to it by saying he didn't write any of it, but that doesn't really make it right in my mind. That being said, Antichrist Superstar is one of the best metal albums of the '90s, and I listen to it too much.