In the case of fascists, deplatform them. All of them. They can return to the basement. Or try it in the street if they dare. The obligation of free speech is satisfied by restricting them to public property, where their behavior is subject to the lysol of public scrutiny and any consequences thereof. (At no level should anyone tolerate them anywhere else, in any function of private property.)
That means Google, Go Daddy, FB, or wherever. If they don’t, then they are no damned good to anyone.
I think this applies to other issues, too. Creationism doesn’t belong in science class. I’d argue it has no value in search results for evolution. Same for holocaust denialists, climate change denialists, antivaxers, or flat earthers.
These movements have proven to be nothing more than parasites, and rather than bending over backwards to help them, tech and information industries should instead ensure they be consigned to oblivion (or whatever existence they can eke out via the mail and/or a leaflet campaign conducted in a park). Let these people try holding a bake sale instead of relying on PayPal for their fundraising for a change.
I find it stunning we live in an age which has done hideous things in the name of “freedom” in order to empower and swell causes of ignorance and yet we still consider it an information age, instead of a dark one.