Maybe so. But I strongly suspect that the emphasis is far more likely to be about sanitising reminders rather than ensuring that they are effective.

This article from Atlantic Monthly in 2016
reports the establishment of what is evidently the first museum in America specifically about the slavery history of America.   It states that there are some " 35,000 museums
that memorialise our culture and history".

Too often in these kind of matters the watchword "Move On" is too readily applied. You need to clean a wound properly before you close it up.