A city's only ever three hot meals away from anarchy.
Half of all the great art and literature in existence went unrecognised during the lifetimes of its creators.
History is what we write, not what we remember. Why should we tarnish the memory of our planet by enshrining our less then noble deeds?
Humanity is an assemblage of information-processing entities, and in that regard you have potential.
The human capacity for grief. It just isn't capable of providing an adequate emotional response once the dead exceed a few dozen in number. And it doesn't just level off - it just gives up, resets itself to zero. Admit it. None of us feel a damn about these people.