I think it can, but very rarely does it, i mean somone who watches violent movies has to already be pretty messed up from Friends/family to go and actually do it. I mean if your watching a movie and somone gets raped in it doesnt mean your going to go rape somone, but if their freinds say somthing like " Wow, wasnt that rape scene cool?" or somthing like that the person is more likely to go do that. same with music. these are just examples... yes i think it can... but not as often as people like to belive. anyways

enjoy your day