As someone who does not believe in government censorship which only drives the idea underground and makes it forbidden fruit, I have to remember what Theodore Roosevelt did when some notorious anti-Semite wanted to stir up anti-jewish hatreds while Teddy was police commissioner. And while many pressured Roosevelt to censor the guy, Roosevelt allowed him to speak, and at the same time assigned him a body guard of openly Jewish cops.
And because it was apparent that the only thing preventing him from being ripped apart by an angry audience was the bodyguards, he ended up looking and sounding ridiculous.
When we ended up confronting a nutty idea, we must remember its not hard to outsmart the nut delivering the nutty message.