Because the implication here is that she thinks having sex with black men is more degrading/humiliating and getting beat up by them is like, more “savage” or something than other races
My liberal friends all disagree with me and thinks I’m kinkshaming, being racist myself, or invalidating her “preferences” or something (which I think is usually also racist, having racial preferences unless there’s some shared culture/experiences)
Race play is one of the few yums the kink community considers yucking to be OK, at least in my area.