As a Black American who has fought against white supremacists in the street I would say the government has no right to prevent their free speech.

At the same time, I’m under no obligation as a private citizen to tolerate their odious speech. This even includes in business settings… At an old company I once asked our CEO to take down “sponsored content” from our home feed that was promoted by a group on the SPLC hate group list (for comparison we also regularly took down ISIS material.)