That's not how it works, at all. Russia didn't become a dictatorship after censoring fascists. Quite the contrary, in fact. By giving a platform to fascism, you risk losing all free speech once it gains power. That's what's happening in the US.
Censorship is not a way to dictatorship, dictatorship is a way to censorship. Free speech shouldn't be extended to the people who actively work against it, for obvious reasons.
> Free speech shouldn't be extended to the people who actively work against it
Okay but then we disagree on what behaviors count as working against free speech, and then we're creating a legal basis to disallow free speech, which is horrible. For example I believe your comment to be against free speech ideals, which by your logic means we should legally restrict your right to free speech and not allow you to post what you just post.
Censorship is not a way to dictatorship, dictatorship is a way to censorship. Free speech shouldn't be extended to the people who actively work against it, for obvious reasons.