Apparently some on the Left are claiming that the song/vid/website is a right-wing smear job.
Of course they do. Remember that attack ad last year (in Tennessee?) that implied that a Black, Democratic candidate was, among other things, having an affair with a woman that happened to be white? Certain media elements took that as race-baiting. They thought all them hicks in Tennessee would be outraged by this miscegenation. To such media elitists, this looks like the same thing. At least she kinda looks like a white girl. I can't tell.
Not to mention that Black Democrats are much more likely to be offended by Black/White relationships.
But I think that web site is just a joke.
