Ever since a U.S. military cemetery in the southern Netherlands removed two displays recognizing Black troops who helped to liberate Europe from the Nazis, visitors have filled the guestbook with objections.
Sometime in the spring, the American Battle Monuments Commission, the U.S. government agency responsible for maintaining memorial sites outside of the United States, removed the panels from the visitors center at the American Cemetery in Margraten, the final resting place for roughly 8,300 U.S. soldiers, set in rolling hills near the border with Belgium and Germany.
It will take several generations of this sort of behaviour being vigerously crushed for it to go away for good. You need to wait for everyone who was alive when it was acceptable, and those who listened to them, to die. Only then is there a chance for a better way to fully take root without being poisoned by what came before.