As the Marquis de Sade figured out in the 18th century, pornography is the most powerful propaganda there is. You give the viewer your anti-white, anti-Christian message, then you burn it into his brain by rewarding him with orgasm. The poor boob can't turn away from the message because its mixed in with the thing that makes him climax. And he will reabsorb that same message over and over and over to get the reward.