I have been in love with anal sex since I found out about the concept in my teens. Thus, most porn movies I watch feature all or next to all anal.
On the basis of a lifetime experience of rectal sin on screen I have made a strange observation. For the longest of times almost no black girls were doing anal gonzo style, only white girls. It is true that most gonzo girls are white and that in absolute terms it is quite natural that there are more white girls doing anal than black ones. However, it seems that only recently has the industry experienced a closing of the relative numbers. I say closing, because it seems to me that there are still a lot of black girls not doing anal.
Based on the fact that white girls are in higher demand in the industry, one would imagine that the numbers would be reversed. Stunningly beautiful white girls don't have to take cock up the ass to pay the bills. Ugly white girls do. It seems that black girls, being less in demand would suffer the fate of their less attractive white sisters.
It also seems that the recent influx of black on black movies - apparently marketing at least partially to a specifically black audience - have much less focus on anal than "white" gonzo.
Why is this? Do black women have smaller buttholes making the raping of said hole more painful? Based on an external examination of the female butt anatomy this seems unlikely. Is it a cultural thing? Are white women freakier? Do white women do more drugs? Not bloody likely. Should the whole thing be attributed to the well known difference in work ethic, i.e. are white woman just better at gritting their meeth and wander of to their happy place?