re: Writing a Paper--Please Help!

Considering Birth of a Nation is protected, and you can't use porn, good luck. I would say something like Mo Jeaux said: an incitement to violence or study the difference between a nongovernment employee and a government employee and their rights to free speech. I can't recall, but I think a nongovernment employee can get canned for talking shite about his employer while a government employee cannot. So a movie written and produced by a guy a GE that slanders GE.

Although if you're looking for something that allows for prior restraint, you'd have to do something like a movie threatening others' lives.