See most civilized countries get around this by just banning the christofascist parties from even trying to build a movement.

There’s two prongs you can hit this from, first, holocaust denialism/minimization, second, supremacism/nationalism, voila, you’ve banned fascist movements without beginning to play whackamole with new right wing parties that just redress the same old bullshit in new lines and rhetoric.

There’s also implementing the BITE model as legal grounds to forcibly disband an organization, that is if an organization is attempting to take control over its members’ Behavior, Information, Thoughts, and Emotions, hunting orgs that tick that list will nip proto-fascist-movements in the bud before they can even rise to being an organized christofascist party that has to have the ban hammer brought down on them for thinking the Jews start wild fires with space lasers.