According to the editors at Slashfilm, "documentary films are capable of so much. They can shape opinions, change minds, make you laugh or cry, and take you to a world you've never seen before. There's really no limit to what they can focus on, either — some are intimate studies of a single person, while others attempt to make sense of a sprawling global conflict. If it has existed at any point in time, or if it may exist at any point in the future, odds are that you can make a documentary about it…If you're looking for your next film to watch, look no further, as these documentaries will challenge, inspire, anger, disgust, and radicalize you — sometimes, all at once." How many of these thought-provoking documentaries have you seen?