I've seen this movie, but I can't call it the best I've ever seen. The topic was important and the way they showed Derek's change was great. But I have to admit I watched this movie only cause of Edward Norton, of of the best IMO and one of my fav actors.
There were few really brutal scenes in the movie, but I had to expect that watching movie about nazists. So closing my eyes from time to time didn't help me to watch it very carefully.
No I'm very serious!
As I heard it on the local news... the poor guy got in to a bar fight with some other guy who was bugging his girlfriend. Later that guy and his friends followed the poor guy from the bar, they beat him up and finally did that awful thing with the sidewalk. I hope they didn't get the idea form the movie.