> There's plenty of historical evidence on how hate speech supports transition of society to a tyranny.

And there’s plenty of tyrannical countries that have no free speech. What’s your point?

Also, democracies can absolutely be authoritarian. Look up the phrase “tyranny of the majority” if you want to see why following a democratic process is not sufficient to avoid authoritarian behavior.

Any big government that regulates all of the minutiae of its citizens’ lives at the expense of minority lifestyles is authoritarian, even if the he majority decided it.