I guarantee each one of those responders would have laughed their butts off had it been Bush.
After the Game of Thrones Bush Head thing, I posted on a message board that although I wasn't offended personally, I understand why people would be, and I know, not just think, that had it been Obama's head there would have been a huge uproar, and it would have been called racist.
Most respondents denied that (it's easy to deny you'd do something if you know you'll never have to prove it) and said I needed to get a sense of humor (did they miss the part where I said I personally wasn't offended?).
However, a few said they would be upset if it was Obama because "Obama doesn't deserve it. Bush does." And that's...just...I have no words.