Robert E. Lee wasn't a racist - and before you get on your Yankee high horse, might one remind you of the blacks hung from lampposts in NY, the racist/discriminatory policies in the North (against Blacks, Irish, Italians, etc) - you know the deal - glass house + stones...
By the standards of today he most certainly was. But then again, so was virtually every other person, North and South, alive at the time. Including Lincoln.