I care about these people. I don't have a time machine to go back and save the Native Americans or Greenlandic Inuits or Jews from the predations of world powers. It's not
awfully convenient for me to care about the genocide of a million people. If I was alive during World War 2 and I received multiple, independent reports that a genocide was being committed by a foreign power, I would be agitating for that foreign power to be held accountable just as I am today.
I dearly hope we've moved past barbaric eye for an eye justice.