Robert E. Lee was no Hitler.  False equivalency.  He was in the Union army at the outbreak of the Civil War, and was even offered the job of leading the it.  But he reluctantly switched sides...not to preserve slavery, but in defense of "state's rights".

Should the Trinity Monument in New Mexico be removed as an affront to the Japanese who died from the atom bomb?   Should the monument to the "Last Spike" outside Revelstoke be removed because the railway was built on the backs (and some deaths) of Chinese coolies?   What about the statues of Louis Riel, leader of the NW Rebellion who ordered the murder of Thomas Scott?  Should CFB Cornwallis be re-named?  What about Lake Huron (did they practice slavery too)?  What about Queen Victoria....the epitome of colonialism?

Point is, where does one draw the line in sanitizing history?  Weren't the pyramids built with slave labour too (at least in part)?  Better take them down too.  Oh, this is gonna take a while...