Explaining the meaning and history of this mural would be bettern. Couldn't they add a sign with a text and QR code with some encyclopedical knowledge about each "controversial" landmark? Something like this [1].
I think is the same with the Columbus statue removal there[2]. Art is a product of its time and if the times were racist/violent/whatever, the art will be so also. Indeed it would be a good way to learn History.
