No, Francisco.  John Hobson's example is right on target.  

We aren't erasing history.   What we need to do is be sure what we consider historical is properly understood, in all its complexity.  Why are we surprised that what we once glorified is now seen as awful?  We don't throw Christians to the lions any more, do we?  Understanding increases and changes over time.  

I don't think you can make one rule about changing names of cities or roads, or whether or not a statue in a public place is appropriate.  A lot of the "if" will be in the story of why the one "honored" is now considered dishonorable, and how bad the story is.  It will also be in changes in the power structures of societies.