That’s literally what discrimination laws are for. You can’t officially hate people on the basis of a protected category (race, sexuality, etc…). You can officially hate Nazis, you can’t officially hate gays.

The gays/nazis comparison was ridiculous because it ignores this key distinction: we, as a people, have decided it’s not OK to hate (in so far as it leads to discrimination) people for certain innate reasons.

Does it matter if they think it’s evil, though? What if they thought that all gingers must be eliminated because they’re evil?

It’s still hate.

So, if they’re not open to being educated, then fuck them.