So you think countries are necessarily made of teams of extremely cohesive people organized by e.g. skin color? And that all their members shall be jointly puni

So you think countries are necessarily made of teams of extremely cohesive people organized by e.g. skin color? And that all their members shall be jointly punished in case of wrongdoing of other members or even of their ancestors? Some of the results of that policy, if applied in its entirety, could well be not what you seem to expect. And I'm not to say that would be fair, when looking at an appropriate big picture, but let's not fall into infalsifiable hypotheses either. Nor complete essentialisation. I agree with the need to attempt to correct unfairness by starting early, though. Just also pay attention to confounding factors, and never lose sight of the goal.