I'm not a big fan of removing the movie. Putting a disclaimer on it should be more than enough, but it's not like there aren't plenty of movies with slaves. Removing one due to how slaves are pictured isn't denial.
Tearing down statues isn't really just a Middle Ages thing. It has happened plenty of times showing changes.
And though statues do sometimes make people curious enough to look somebody up, it's a long way from erasing history. Statues are made to celebrate people and if they aren't worthy of that, it's not like they disappear.
I'm not for some massive purge of statues, but I don't see why people whose only contribution to history is slavery should be having a statue in a modern society. Don't destroy it, but use it to tell the sad parts of history.
Meanwhile I don't really see why it should end up with buildings destroyed.