So you want to be a filmmaker?
What do documentary filmmakers do when their film contains music, TV, or other copyrighted material in the background? They have to license it from the copyright owner --or risk litigation. Both alternatives are prohibitively costly, and it's crippling the art of documentary filmmaking.
Here's a link to "Untold Stories: Creative Consequences of the Rights Clearance Culture for Documentary Filmmakers," a report from the Center for Social Media on how our ever-expanding "culture of ownership" is making it more and more difficult to get documentaries distributed. It's worth reading--and even if you don't have time for that, the short movie that summarizes the issues in the report is worth watching.