I have a question for you, Lockejaw. Just last weekend, I spent the weekend in Charlottesville, VA. I visited the homes of both Thomas Jefferson and James Madison. The experience was fascinating, and I felt deeply conflicted by it all. These were men of privilege, and despite their virtues, essentially rich kids. Yet they laid out a framework for government that promised more freedom to more people than any the earth had yet seen (eventually).
But the profound contradiction, in touring their estates, was the ubiquitous spectre of slavery that propped it all up. Both Jefferson and Madison owned over hundred slaves each and, though they seemed to recognize it for the evil institution it was, neither were willing to forgo the benefits of indulging it. This gnaws at me. I can't imagine how you must view it.
I was particularly struck by an entry in one of Madison's journals where he described the conundrum of having taken a slave with him to the constitutional convention in Philadelphia. He recognized that after being exposed to the profound ideas of freedom for all men that they were codifying into law, he couldn't allow the slave in question to return to his estate and mix with the other slaves - he KNEW what that would mean. He concluded that the only thing he could do was to sell him in Pennsylvania (where slaves could be held for a maximum of seven years) and take a 'loss' on his 'investment'.