The Scaries Philosopher, Is It a Dangerous Ideology?

There are times where philosophers have seemed to embrace ideologies that were a, looking back, evil or not favored nowadays. A julius ivola was basically a huge proponent of fashism and nauteism. And in our contemporary lens, that would be considered wrong. But once you start talking about philosophy, you can't say that there's things that you know ultimately must be banned. It's like, what at what deserves censuring and who's censoring it?