I'm going to recommend a movie: "The Battle of Algiers," probably one of the best and most realistic movies to explore the roots, ideaologies, and methods of terrorist organizations - but don't worry, it doesn't portray the terrorists as the good guys. It doesn't really take sides at all, actually. It's clearly left to the audience to decide who are the good guys and who are the bad guys (although after seeing this, I doubt any of you will be rooting for the terrorists). Your local Blockbusters should have it, or they mught be able to order it for you.