Law professors Keith Aoki, James Boyle and Jennifer Jenkins have produced a comic book Bound By Law? Tales From the Public Domain which gives good examples of some of the terrible barriers copyright law has placed in the way of documentary filmmakers. Though these authors are not radicals or very principled (and of course, like mainstreamers, their approach is soft-utilitarian), the piece helps to illustrate some of the immense costs and restrictions on liberty imposed by copyright law.