Yep, white people have done lots of bad things to darker colored people, just for being darker.
Not being among those who have committed heinous and horrible facts, I refuse to be ashamed of being white.
Now, if I could get my old man to stop using the word n1gger as a general term for black people, I'd be happy. THAT, I'm ashamed of. (Yes, I realize I have about the same level of responsibility for both items, but he's related to me and you want your family to be better than that.)