I really don't understand the fascination with monuments and statues. If any of the monuments are interesting artistically, they can go on display in museums, with plaques explaining the context in which they were built. The rest can either be sold off to private individuals, go into storerooms or destroyed. They're deliberate propaganda erected after the fact at the turn of the century to promote a mythological, racist history and to glorify the Jim Crow era. They don't teach anyone anything except that if you take up arms against your country to keep people oppressed, eventually someone years later will commission a giant statue in your honor and whitewash your story. The things named after Confederates (military bases, schools, etc.) should all be re-named after honorable Southern war heroes. You know, the ones who refused to commit treason over owning people. I'm assuming there must have been a few?.
I also don't understand the "learn from them" stuff. There are a lot of historical figures that do not have monuments in town squares, and yet no one has forgotten them or their stories. And not every historical figure needs to be remembered. Will anyone really suffer if they don't know who J.E.B Stuart is?. If you want to learn about history, go to a museum, read history books or watch a documentary. They are informative enough to motivate a person to dig deeper into a subject without, glamorizing or glorifying anything or anyone. Monuments literally put historical figures up on a pedestal. Most authoritarian governments are fascinated with statues an monuments.