I remember seeing "The Greatest Story Ever Told" which despite the usual hackneyed Hollywood treatment was fine until Marion Morrison, playing the centurion standing at the foot of the cross delivered the line "truly he was the Son of God" in a manner that caused such convulsions of laughter I thought I was going to wet myself. That one should come with a warning.

The violence seen in movies these days is the film industry holding a mirror up to society and refelecting back our own casual acceptance of brutality along with it's causes and consequences. That's why it's so disturbing.