I used the movie Sometimes in April for my Psychology of Evil unit, but it can definitely be used in multiple types of classrooms. It is a movie about the Rwandan genocide. It follows the story of two Hutu brothers, one who was an extremist and the other who was married to a Tutsi. It is by far, the BEST genocide movie that I have seen.
My students LOVED the movie and the worksheet really helped them break down the extremity and complexityof the genocide instead of "a bunch of killing."