I don't think people realize why its important to remove white supremacists from your board/forum/web community.
- They are extremely motivated.
- They have a tradition of recruiting via meme(in the classic sense).
- They have centuries of effective propaganda.
- They will take over. Slowly at first then suddenly.
- They will always create more moderation work for you. They will never stop pushing.
Every society struggles with this. And it's not some conspiracy.
Once you've gone through it a couple times your instinct is to ban outright immediately. But most people are not white supremacists, they might have some cultural baggage or poor taste.
And almost everyone will push back on you when called out, the fight gives you the feeling of legitimacy and you reach for the ban.
And it is another reason why you can't suffer the bad and obvious ones. You need the energy to maintain empathy.