That's being said, sometimes a little offensiveness can be effective. That's why I am a fan of how comedians like Louis CK and Chris Rock have addressed the issue of white privilege with their "Being white is great" and "Colin Powell speaks so well" bits.
Hell, when I heard Chris Rock do that Colin Powell bit I was like "Holy ****! I've actually said that nonsense before! I'm a ****ing douche." Granted, ever since I saw that bit I've said stuff like that to my black friends just to **** with them, but I'm a dick like that.