Due to the fact that after the statue is removed, 2 things can happen too it:
1. It is donated to a museum, where people can learn about the person with more context to history at the time.
2. It is sold to a private collector, who'll most likely sell it to a museum. If they don't, than that could be considered erasing history, in some cases.
Edit 1: To the people messaging me and saying I don't understand the Confederacy, my great great grandfather fought in the civil war for the confederates. He's buried in the oldest graveyard in Houston. That doesn't mean I want a monument honoring him in my city.
English
#Offtopic
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It would be like having a statue of the [url=http://www.wikipedia.org/wiki/Godwin%27s_law]-godwinslaw!-[/url] leaders in Germany.