The free speech of the neo-nazis and the woke must be defended not because their theories are true. As obvious as can be, their beliefs are non-sensical and dangerous. But, as John Stuart Mill argued in On Liberty, free speech is a rule for learning or approaching the truth, and the rule can only function and survive if selling intellectual snake oil is not banned. For if it is, you need somebody to determine for others what intellectual snake oil is.

However, government subsidization of one set of ideas or the other is a recipe for disaster.