Great and good men and women stirred sugar into their coffee knowing that it had been picked by slaves. Kind, good ancestors of all of us never questioned hangings, burnings, tortures, inequality, suffering and injustice that today revolt us. If we dare to presume to damn them with our fleeting ideas of morality, then we risk damnation from our descendants for whatever it is that we are doing that future history will judge as intolerable and wicked: eating meat, driving cars, appearing on TV, visiting zoos, who knows?