I am in favour of free speech and artistic expression, but think all art (including film/video) should be properly marked, so that viewers can avoid nudity, sexuality, violence, vulgarity, and other content. It should be created, but it should only be consumed by consenting adults. I myself don't allow my children to view anything like that, and generally limit my own exposure to most unnecessary violence and sexuality. But I support every adult being able to make their own decisions.