Can an entire group of people be held accountable for the sins of some of their members? Lamentations 1:18 says yes. God's people bear corporate responsibility. We may not have contributed directly to the wrongs committed in the past but just as we inherit benefits from our ancestors we must also accept the legacies of sin. Following after the example of Jeremiah, God's people can make a confession and seek healing for what we as the people have done and acknowledge the consequences that are still with us.
Today this means we must think about how we conduct our lives, knowing that the choices we make today may affect our grandchildren.