And without an exception, the yahoos who piss and moan about American slavery, which was eradicated at no small cost of American lives, turn a blind eye to the current slave trade....conducted primarily by Islam.
Nor do they consider that it was white, mostly devoutly Christian, people who forced the abolishment of slavery to the forefront and they seem to discount the great price in blood and treasure in a terrible war that ended slavery in this country and ultimately ended segregation as well. To judge past cultures on a modern sense of morality is generally pretty tunnel visioned; most especially when a blind eye is tuned to the immorality and/or injustice of one's own time.