As long as we are on this historical retribution kick, there is a long list of other long dead figures who have statues that need to be removed because their actions or beliefs, accepted in their lifetimes, do not fit our 21st century standards.  George Washington, Jefferson, most of Britain's monarchs up until Victoria, a large assortment of Popes, Roman emperors, European monarchs... it is a long list.  Supporting slavery; the inquisition; murdering opponents; starting wars; ...these are the kinds of things they all got up to in their day.