We must not obliterate history if we’re to learn from it
All things better have been improved by learning from past errors and mistakes.
These are some laws long forgotten from back about the time of confederation: a husband should not beat his wife with a stick more than an inch in diameter; another law, if you are driving a motor vehicle and a horse ridden or team driven approaches you must stop and shut off the vehicle and cover the hood with a blanket. The cost and time to rescind meant it was left on the books.
Therefore, since we learn from history we should not obliterate those public displays of historical figures. It was a different time and if we don’t leave them there we will not progress as people with humanity.