There has been a certain normalization of white men dating Asians. Because feminism has made so many otherwise attractive white women into bitches, it is easy to understand why perfectly normal white men are tempted to settle for Asian women, as they seem to be more feminine, submissive, and oriented toward home and family.
But even those who defend whites dating Asians as a normal and healthy reaction to a sick society, will immediately assume that there must be something wrong with a white man who dates a black woman. Even the most delirious Yellow Fever victims balk at that.
Hence the normalization of white male/black female pairings has emerged as an identifiable action item on the agenda for white genocide.
For a long time, such parings were quite rare in television and the movies. It seemed easier to sell images of black men as wise mentors, crime fighters, scientific geniuses, US Presidents, and God, than black women as attractive sexual partners for normal, non-defective white men.