I've had similar problems: try to go easy on them. I'm a Buddhist and a vegetarian and sometimes the world has seemed just too cruel to me. But you won't go anywhere obsessing about those thoughts. Also try to watch calmer movies, don't beat yourself over it, you should relax first, reading, walking, exercising; things like that are definitely better than watching a silly movie like American Psycho (I found some parts of it a bit funny, I remember, that's about all I got from it). If you feel you really cannot relax on your own, maybe you could try a herbal remedy like kava (a highly reputable herb for anxiety, with little to no side effects; it is safe although it has gotten some ridiculous bad press over an industrial mistake), or acupuncture, or massage; whatever's better for you.
Best wishes (we're in this together).