Big black cocks
Big Black Cocks is one of the most desired fetishes or niche preferences in the porn world. There is a lot of things about sex that touch forbidden sex, and interracial sex is one of those things. That black men are "known" for having larger cocks makes it more impressive to many. So there is plenty of demand for hardcore white girl versus black cock and Asian girl versus big black cock scenes. Sites such as Blacks On Blondes and Blacked are all about interracial fucking and hot white girls taking big black cocks in every hole, sometimes in gangbangs.
Generally, it's considered the pinnacle of interracial for a girl to get a double penetration by big black cocks. For others, it's the end of a girl's career in normal porn, because she would fuck black guys like that. It all depends on what you enjoy!