First of all, parents can choose which films their children see up to a certain age - when they get a driver's license, then things change, but by then, let us hope they have had some responsible education from some source about both sex and violence. But no one sees either kind of film by "accident," and it's not like there's any danger of a 6-year-old being let in to either movie.

I don't see any point in banning either movie. It just gives the film more attention than it would otherwise get, anyway.