Documentary Filmakers' Statement of Best Practices in Fair Use
"This Statement of Best Practices in Fair Use makes clear what documentary fi lmmakers currently regard as reasonable application of the copyright “fair use” doctrine. Fair use expresses the core value of free expression within copyright law. The statement clarifies this crucial legal doctrine, to help filmmakers use it with confidence."
http://centerforsocialmedia.org/rock/backgrounddocs/bestpractices.pdf