Two, maybe two and a half years ago, there was a quote attributed to the VP that mentioned "white people" and "racist." There was never any proof she said that; it was fabricated.
Personally, while I've not seen every speech she's made, I've never heard her refer to "white people." I find your comment out of context; a bit disingenuous to be frank.
I've heard her mention extremists and MAGA when discussing things like what we're talking about here. We've heard that on a lot of subjects.
The problem lies in the point she's also referred to conservatives/republicans as extremists. She's said the same thing about those who support the MAGA movement.
The refusal, or inability, to recognize the differences in people who disagree with her beliefs is a core problem. You can't paint with a broad brush in the morning and expect people to believe you when you're using a micro-detail brush that afternoon.