I find the only way for the system to work is to tolerate the intolerant. That is to say, it's vastly easier and more consistent to allow everyone their right to speak their mind than it is to justify why one person's speech isn't another person's threat. We're at the point where people are claiming MAGA hats are actionably threatening. So should that not also apply to anyone who says "eat the rich"? How about actual real communists that want to dismantle the government? Anarchists? How about anyone who promotes anti-establishment music (e.g. f the police) Which political positions, which political speech is dangerous and which is allowed? How do we know?
Or put more succinctly, when all the other intolerant are gone, who will speak up when they come for you?