To me a toxic belief is one that is potentially damaging to another human being. Meaning, we should believe in self governance, the right to work towards our happiness and all.

But if our concept of happiness is built upon the misery of other humans, and that mission, that path is justified because of a bigoted toxic belief.

Then, in my view, its not OK and should not be tolerated. We can't in the name of tolerance, allow intolerance.