It’s characterizing an individual person for claiming to be something they weren’t.
I agree Trump is racist. And I’d say this nickname is unfair since Warren, even if she’s not native, was making a good-faith claim based on family history.
But just because Trump is racist doesn’t mean everything he says is racist. And claiming he was being racist when there’s a solid non-racist interpretation, makes it that much easier for his defenders to claim he’s not being racist in general by giving them an easy case to start with.
I haven’t followed enough to know if there’s good reason to think the claims were mistaken.
He claims she did. That doesn’t mean he’s racist, it means he’s lying.
Though there’s not really a good compact term for referring to native americans, I’ve heard Amerindian but that’s hardly widespread.
Yes it is, that’s been his claim all along. The audience response is racist since they’re performing a racist caricature of natives. But Trump’s claim isn’t that she native, but that she invented a fake aboriginal ancestry.