Our tradition envisions that the gates of Divine Judgment close at Yom Kippur's end, necessitating reflection and atonement for our sins in the past. This year, I'll be adding to the list: for the sin we have committed against You by mindlessly reaping the benefits of slavery.
When those of us who have dedicated our lives to promoting a Godly vision of the world even appear to subvert others, we slowly (or immediately, depending on the gravity of the action) destroy that which we purport to elevate: God.
There's a problem with penal substitution. Biblical sacrifices do not represent human attempts to purchase forgiveness; instead, they offer a ritual means of acknowledging the costliness of sin and alienation from God.
We may not fix all the wrongs done by our fellow Muslims, Christians, Jews, Buddhists, or Hindus, but we have the power, and the responsibility, to be constantly improving ourselves and our communities.