About 1/4 of Dems polled think marriage between races is a problem. Closer to 1/3 for Republicans, but I assume you'd concede that they're white supremacist.

Beyond the overt and Hollywood education-level white supremacy, there is institutional white supremacy baked onto our systems and Dems are 100% there to entrench it, as white supremacy still serves an economic function of creating marginalized subclasses.

Here's an easy example: remember the George Floyd protests? The ones against racist police violence? Where BLM and related groups around the country were demanding defunding for police and investment in communities? All of the major protests were in cities, cities run by Dem city councils. Almost none of them did anything in that direction at all, and those that did rolled it back. Now, most of those cities are pretending that defund did happen so that they can give even larger budgets to their still-racist (personally and structurally) police.

I can't think of a single Dem I've talked to about defund or BLM or even just structural racism that hasn't committed "baby's first thought about black people" errors that are largely just rationalizations they picked up from Dem politicians. To be fair, most of them have been white, but it's still embarrassing.