Yes, that old chestnut. Discrimination exists in the real world and it exists in the porn world. Evidently interracial sex is taboo not just Neo Nazi's. This article is enlightening:
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Very interesting article indeed. It must be a hurdle if you are a pro$$ie and your first encounter with a black man, intimate or otherwise comes where you are faced with having sex with him. Then again sex with a pro$$ie is like sex in a porn situation I would imagine, in the sense that it is all a performance for money and if you are selling your "expertise" then you have to, like with any business, define your target market.
If you decide you want to have a specialist range of services to go alongside your general brand offering, then you might decide that you particularly welcome sex with black men. If you do or do not have sex with black men then there is no problem to my mind putting it in the product spec and on the packaging. Surely no black man would want to be in a situation of laying down and about to have sex with a white woman only to find that he is in fact opening a can of worms (re. her mental state/attitude towards blacks etc.)
What always makes me smile is how the women in porn and punting never show any believable reaction to what is being done to them. In that video clip in the original posting the woman doesn't even flinch as the action commences, or break her conversation, even though it looks as if there was something going into her that should make her flinch and at least create a bit of an acknowledged moment (not to mention painful - but not being a woman I might be wrong, maybe it's not like being kicked in the balls).
Not really wanting to foster another "sex with black men" posting, it was just an indication of what a funny old world we live in and the sort of "I see your prejudice and I raise you one..." sort of thing that was going on in this instance. No matter what sort of discriminatory view you hold, someone can always top you.