My favorite retort to the "white pepo stole everything from blacks" is, "well if blacks were actually the people you claim they were then white people wouldn't have been able to steal anything."

If I'm feeling especially assholish I tend to throw on, "Why do some tribes in africa still not have indoor plumbing? I guess the white people just steal all the pipes black people keep making so they're forced to shit in a hole in the ground."