Fascists don't believe that, and will happily kill people with different ideas if they get the power to do so.
This is the paradox of tolerance. It's pretty well understood, except apparently on online message boards where there are somehow always a bunch of people ready to jump to the intellectual defense of Nazis (evidence: this comments page.)
FYI, whataboutism in a thread about Nazis makes it look a little like you're defending Nazism. Was that your intent? If not, what did you intend to add to the conversation with this (true) observation?
Not at all. Nazism is disgusting, horrific, indefensible, and should be condemned at every turn.
But nazis would argue that it’s better (that’s why they’re nazis). That’s why it’s so hard to kill an ideology and why my original comment used the word “unfortunately.”
Okay, but there are plenty of objective truths that people disagree with. The fact that the earth is approximately spherical is objective truth, regardless of the existence of flat earthers.
I feel pretty okay saying "nazism is wrong" is about as objectively true as a statement of ethics can be.