"a living diorama of so much awful history between the First Americans and those who took everything from them."
It's interesting how we think in terms of "them and us"; only in this piece the author, a white man, is siding with "them" rather than with his own side/tribe or race.
Why? Because in overreaction to the evils committed by white men (especially slavery, Jim Crow and the Holocaust, despite the latter being white on white) it is now deemed a moral virtue for them to deny and despise their own white race. And with moral virtue comes personal advantage, privilege and power.
I'm not defending the evils committed by my own white race, put pointing out how an ideology of white racial self-denial and self-contempt now serves the state and its liberal elites as an instrument of socio-political intimidation and control, just as medieval church ideology once did.
It's the age-old strategy of “divide and rule”, with America's white elites demonstrating their moral superiority, and thus right to rule, over both white majority and all the ethnic minorities, by themselves embracing this self-destructive ideology, and not just of white America, but of American society at large.
It is exactly the kind of overreaction the NYT itself warns about in an editorial response to the Paris terror attacks in November 2015:
“In the reaction and overreaction to terrorism [evil] comes the risk that society will lose its way.”
The West's elites have indeed lost their way (see The West's Overreaction to Nazism).