Denying the oppressor a platform from which to speak is a revolutionary act.
I believe in free speech, therefore I must do everything within my power to deny an audience and a platform to those who would see it taken away. This is so often seen as hypocritical. Tell me, is a doctor a hypocrite for killing cancer to save a life?
I don't advocate for the use of physical force or violence to stop these people from believing what they do or voicing it in their own personal property or whatever venue they might create. What I do advocate for is taking every single noncoercive measure possible to stop them. All it takes to kill fascism a little bit more is for you to assert your right to not provide a platform or an audience to fascists. If you don't listen to them and you don't let them speak to you, you deny them a vector from which to infect other minds.
And who's the fascists here? Those expressing distasteful views, or those trying to arrest them for their views?