Point of fact: it’s generally illegal to fire someone for attempting to organize a union. That’s why companies that are getting rid of union organizers and sympathizers almost always have some other pretext. Even doing things like cutting your hours, or putting you on unpleasant shifts, can be “constructive dismissal”.

While I understand what you’re saying I think that there’s something different about Nazis and people that actively want to commit genocide; their very existence is so antithetical to a liberal democracy that acting in ways that would normally be outside of the bounds of decent behaviour is justifiable.