Trust me, they are out there. You can see a lot of it in their reactions to Meghan Markle and her royal husband, some of them quite virulent and nasty (towards Markle). With white women their racism towards Black women with white husbands is sometimes a bit more subtle (but not always), and usually expressing itself through their entitlement to white men's desire.

The loudest voices though, are Black men, who have a whole lot to say about Black women with white husbands, and none of it is good.