oh ok so I guess you'd be okay if we bulldozed Auschwitz and the Japanese internment camps
because surely that stuff happening is still told in books so no one in the world believes driving a car through those sites changes that amirite
Those are memorials respecting the
victims of the practices. If these were memorials for slaves; Harriet Tubman, Fredrick Douglass, etc.; everyone would be complaining about removal.
These statues aren't respecting the victims, they're commemorating the people who allowed slavery to stay in place for so long, and who fought to make it the law of the land.
It's absolutely ridiculous and it's no wonder these cities wouldn't want these giant statues sitting out in the open because it's going to make people identify the city with the values of that person. That's why there is a push to move them out of the public eye and into storage or museums where they can be put into proper context.