You’re allowed to be a Nazi, you’re allowed to be a Hamas (non-financial) supporter, you’re allowed to be a pro-Gaza genocide advocate if you want. You can advocate for the extermination or enslavement of all black or white or Christian or atheist or gay people if you want.
You may (and probably should) become a social pariah and private parties can decline to affiliate with you, but the government isn’t allowed to do a damn thing about it.