The year of guilt and atonement

[ArcticGong]

The Armenian genocide, French recognition of their part in the Rwanda genocide, the Tulsa massacre commemoration, Justin Trudeau apologizes on Canada's behalf over the newly found mass graves. Add the list if you know more atrocities that have been recognized this past year.

It's maybe the youtube algorithm but this year have many past crimes resurfaced where world leaders apologize for crimes committed in past.

I have always got a strange feeling when people talk about how their identity or ethnic background is responsible for accomplishments in civilazation. I feel that if one wants to take credit for one ethnic background one should include both the good and the bad, maybe because I identify with an ethnic background with few accomplishments for society. Is this activity of acknowledging past crimes positive or constructive? Should more nations or ethnic backgrounds atone and acknowledge their "past crimes", or is this exercise silly and we should focus more on the present? Or is all of this just political? 
https://www.youtube.com/watch?v=gKU_Lpe32xU