On the "all white people" line: the bit that I object to is that MB is indulging the typical American habit of referring to "white people" when what they mean is "white Americans".
It's the unwillingness to accept that white Americans aren't actually representative of every light-skinned person in the world that I object to, and that there's a damned sight more to the "colonialist-shithead" aspects of European history than just the slave trade.
I agree with a PP that everyone gets a degree of racism programmed in though. Come from the culture. Happens to everyone, regardless of skin tone, just as everyone picks up the sexist mores of their culture whether they're male or female. And even if you actively reject the racist/sexist shit, it's still present in your head, just waiting to bias your thinking. Random book rec: Cordelia Fine's excellent on this.
But if everyone's picking up basic racism through the telly (thank you American media) then we need words to distinguish between that level of unconscious racism, and the overt shit. Because there is a world of difference between "picked up an unavoidable slight unconscious bias due to culture" and "proud member of the KKK".
I'm consistent on this one though; I think the same when it comes to sexism. People who declare they're not sexist at all are denying the possibility of having picked up an unconscious bias from their culture and it drives me up the wall - we all get programmed with this shit, men and women alike, and if we don't recognise that then we're never going to be able to stop doing it to the next generation.