Nothing, outside of actual sex with a man he really liked, got Dustin off like interracial gay porn. Plain old black on white gay porn was good, but interracial gay thug or bear porn was best. This always made him feel guilty. He was a typical white man, all the assumed societal power of that position applied to him. He knew his attraction to the raunch was purely animalistic and it bothered him. He knew he was partaking in a long malignant history of black objectification through hypersexualization.
His world was completely separate from the type of men in those movies. It's not like they could have conversations about Malevich or Kandinsky and in all honesty, he didn't want to. It would ruin his fantasy of letting himself be used by a rough and tumble overly sexual hyper-masculine personage. As bad as he felt about the social dressings of the situation, getting off felt better. After all, it was just a fantasy, incomparable to getting the cum fucked out of him by someone he really loved.