Seeing the Past in Present Tense

The biggest question take-away I got from this article was the question of whether or not there was such a thing as an "accidental" monument? A footprint or fingerprint imprinted in the concrete of some walkway, or perhaps a shoe that was caught somewhere in the air, in the treetops or the cable lines, that no one could or cared to get down. 

Could monuments meant for one memory actually preserve something drastically different? Say, Mount Rushmore--a clear representation of great US presidents, a cornerstone of American pride. What's to say that it's not actually a monument of colonialism, or the great destruction the immigration of European peoples brought to the "New World"? In some lenses, this monument mockingly celebrates known "murderers".