There is precedence for using restrictions on freedoms to preserve those freedoms, a good example is Germany which very highly values freedom of expression - but has strong laws to defend those freedoms against anti-democratic forces - often referred to as “militant democracy”: it’s a system that’s not paradoxically intolerant of intolerance and so far seems to work well - and it shows that it is possible to draw a line somewhere in the law without needing to resign oneself to having to tolerate virulent evil in the name of freedom of speech.