From the preamble to the Grindhouse Releasing 2-disc DVD of Cannibal Holocaust (1980), after a couple of paragraphs of blather about the First Amendment:

What you see will definitely shock you and offend you. Nonetheless, it should be viewed as a disturbing historical document of a bygone era of extreme irresponsibility which no longer exists, and, hopefully, will never exist again.

Right. A company called “Grindhouse Releasing” sells this edition of “the most banned movie ever made” purely as a historical document. Practically in the public interest. Sure.