Moral Relativism Redux

I was wondering at how the founding fathers would feel, if they knew that the modern-day enlightenment found their practice of slavery as morally reprehensible, inexcusable and a social embarrassment. But would the founding fathers find it equally reprehensible, inexcusable and a social embarassment in the modern-day practice of abortion?

After all, not everyone of that era practiced slavery, and not everyone of our era practices abortion, but yet these topics seemed to be argued and re-argued and not resolved. The practice of slavery led to the Civil War. What will the practice of abortion lead to?

But, of course, this is just an observation......