Yeah but if it's not the music something else will influence them in the wrong direction. Think Ted bundy or Jeffrey Daumer. They did not listen to anything bad. Bundy was into Clasical music. There is always something that set's everyone off. My computers at work do it for me. The music may inspire but if the music was gone something else would inspire to do the same thing. That is my opinion. I am not a psychologist.
Maybe it was living in Pammel Court that set Jeff Dahmer off....