"Is that erasing to just not glorifying?"
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Destroying the "art" and renaming parks etc imo is a slippery slope. I just read an article about Baltimore. (link below) I think their solution might be an excellent compromise. If they keep the statues and put them in a museum or something like that. It takes their position of prominence (which makes sense) and maintains our history allowing future generations to view this "art".
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http://www.msn.com/en-us/news/us/crews-remove-baltimores-confederate-statues-overnight/ar-AAqaPZy?li=BBnb7Kz