Robert E Lee was in Washington D.C. to testify at Congress. During that time one of his former slaves, Amanda Parks, came to visit him, but just missed him since he had just left for Virginia. So she wrote to him. She asked him if he is angry with her. He answered, "I do not know why you should ask if I am angry with you. I am not aware of your having done anything which would give me offence. And I hope you would not say or do anything what was wrong .While you lived at Arlington\ you behaved very well..."That letter says volumes about the amazing character of Robert E Lee. It is tragic that people step on his memory that do not nor ever could measure up to his boot straps.
I might mention here that Arlington was owned by Robert E Lee, but during the war it was confiscated by the Northern authorities to make it into a graveyard.