Takes courage to stand up to a mob, online or in person. We need to defend the right to discuss distasteful things, and even to wonder if they are true (should I add a holocaust disclaimer here?).
The people whose speech you're defending aren't interested in intellectual discussion or good-natured adversarial debate. They want to kill people, deprive them of rights, shout down everyone who disagrees with them, and justify all of this with a tissue of lies and conspiracy theories grounded primarily in bigotry and self-importance.
> They want to kill people, deprive them of rights, shout down everyone who disagrees with them, and justify all of this with a tissue of lies and conspiracy theories grounded primarily in bigotry and self-importance.
You're talking about a vocal / violent minority of conspiracy theorists. Most are investigating their theories about possible conspiracies. Is there anything a conspiracy theorist could say, to try and prove they aren't against you?
Because your blanket description of 'the people whose speech I'm defending', and your implication they should be denied the freedom to speak their theories, makes you look disinterested in an intellectual discussion with any conspiracy theorist.