I communicate best by using live nude people up on
stage in an interpretive dance. The human body is
beautiful. If you are offended by it you should just
leave. If you decide to ban me from your conference
you are just trying to censor my free speech.
The counter point is very valid in so far that if you describe this act as a "Demonstration of Ten Dirty Sex Acts and How to Perform Them" that you will get similar reactions by self-proclaimed saviors of morality as they received to their talk.