Kinda chilling, really.
Slavery is something so evil (and so historically prevalent) you’d think the American Experiment would have been like Jesus’ second coming to Earth.
No more slavery, property rights, free speech, and the right to defend yourself, and be secure in your papers and your person.
You have to be actively evil to screw with something so basic.
it's because we are Christian we see it as evil. Prior to Christianity, it seemed just normal. Watch the serial "Rome" and you'll see how normal it was, even morally ok.
Christianity changed all of that. Now we can't imagine slavery.