A little while back I saw an /r/AskHistorians question on whether there was ever a post-U.S. Civil War equivalent to "denazification".
The answer is that this is what is happening NOW. That is essentially what people are trying to do by renaming buildings, taking down statues, teaching history that doesn't whitewash or glorify slave-owners, etc.
Imagine if Germany took 150 YEARS to tear down Nazi statues, ban the swastika, etc. That's us. 🔁