Germany has done quite well since WW2 without having statutes of the Nazi's. Germany has train stations, jet airplanes and freeways. All inventions of the Nazis but Germany doesn't have public statues of Wernher von Braun. Sure they kept the Nazi innovations but they put the Nazi inventors in a Museum.
So why in the USA white supremacists nazis are on the steps of the courthouses and town squares ?
A black person should not have to look at a statue of Robert E Lee or Stonewall Jackson when he enters a court house. because that's a sure sign that he'll get no justice in there.