Here's another tidbit for the 'rename' crowd to chew on...
Arlington National Cemetary is located on land once owned by Robert E. Lee... or more correctly, owned by his wife, Mary Curtis Lee. Mrs. Lee had inherited the 1100 acre estate from her father, George Washington Parke Custis, upon his death in 1857. Custis was the grandson of Martha Washington and had been adopted by George Washington when Custis' father died in 1781.
So here we have the most revered cemetary in the country, final resting place for patriots and presidents, built by a man who was the adopted son of a slave owner and left to the wife of the best known general of the Confederacy.
ETA. The federal government had laid claim to the land through an'insurrectionary tax sale' that required to owner to pay in person. The government bought Arlington at the tax sale auction - they were the only bidders. In 1882, the US Supreme Court ruled the tax was illegal and title transferred back to the Lee family. Arlington was given back to Lee's son, Custis. Since it had already been turned into a cemetary with thousands interred there, Custis sold Arlington to the federal government.