Critics call them “popcorn politics” and “sanctimonious morality tales.” Others, like U.N. Secretary General Ban Ki-Moon, believe they can change the world. These are movies that tackle controversial global issues. Hollywood is no stranger to gritty realism; films of conscience and protest have been around since the early 1930s. In recent years, however, there seems to be an overabundance of this genre. Ban Ki-Moon has urged the industry to make even more, stressing how much popular culture can affect public consciousness. Whether these movies generate real change or spur the viewing public into action is debatable. But at the very least, they document tragic international events and highlight human rights issues that may otherwise remain obscure or resigned to history books. Here are 10 movies with a mission.