If short lived pleasure is the parent of pain, then unearned guilt must be the Mother of egocentric delusion.
Whether it be the subject of race, the ecology, gender issues, or relative wealth; the program is the same — If you haven’t done anything wrong, stop letting collective, unearned guilt drive your rhetoric and actions.
If you want to change something wrong you’re doing today, great. Have at it. But, the distant past no longer exists, and any real or perceived wrong one might dwell upon is simply a repeat of previous, identical events. Nothing’s ever new or unique.
Same goes with giving others a hard time about things people did 150 years ago.
Stop it. It’s just ignorant, self-centered behavior.