What's next .... have schools stop teaching kids about the civil war? Pretend it never happened? You can't change history, no matter how bad it was. Removing civil war memorials because some people may associate them with white supremacy or slavery is ridiculous. 
By anyone's definition, George Washington, Thomas Jefferson and every other founding father of this country was a racist, white supremacist and slave owner. Shall we take down their memorial statues too?