The post you are reporting:
Social media outlets have their own rules governing what can and cannot be written or shown but, generally speaking, they'll follow the money and only change the rules only should a public outcry threaten their profits. I wouldn't rely on capitalists to deal with the far right (after all, they handed the German Chancellorship to Hitler).
Let them jabber on, I say. They would, in any case, turn any attempt to restrict their output to their advantage by claiming, e.g., that they are the 'true' democrats gagged by the forces of multiculturalism and 'political correctness'. The best defence is active critical thinking. (Sure, that won't work against prejudice, which is blind to rational discourse: the worst danger is intellectual laziness.) But if that fails, then it'll be '¡No pasarán!' and Cable Street all over again.