We cannot collectively socially evolve without generational wisdom. With each person born we start anew and face such similar emotional struggles as each person before. Unless we begin to honor the wisdom of those who have come before us, we will never know true progress.
Those who have been stripped of their generational wisdom have been wronged in the deepest of forms by their erasers, their oppressors. The young generations of the oppressors have a social and moral responsibility to honor and make space for those who their ancestors erased.
We are bound to those who came before us. Denying the atrocities of your ancestors is denying how you have come into being. It is not your responsibility to flog yourself for their actions; it is your responsibility to make space for the generational progress that would and should have been.