Nor anyone who lives in (or at least grew up in) the South. Remember 'Dixiecrats' and the 'Solid South'? Used to be that the Democrats would have been the most statistically racist, no question.
Oh, I'm pretty sure the residents of Detroit and Chicago and Baltimore and DC are... aware.
And yes, reticence to intermarriage is not restricted to people of one skin color. Don't know what point y'all think you're making, of course it does. Come to point, were I a black parent living in one of our more segregated cities, I would be nervous about my child marrying into an all white family and neighborhood. I wouldn't think they were doing something
immoral, but I would worry a lot about their well-being.