Looks like a comment of mine posted just now might have gotten lost.
I wanted to say in relation to the slavery question: everybody today considers the Founding Fathers hypocrites and rates himself superior. But a simple look around shows that we are today engaged in a hundred ways in things far worse than slavery. For one, slavery itself isn't even vanquished. You've got wage-slavery in abundance in the U.S., child labor overseas, and these are all sins about which we -- you and I -- are doing nothing. Just like the generations before the Civil War did nothing (actually they did some things, like increased manumission in the border states) about slavery.
Today we're also eating up all the world's resources and flirting with ecological collapse. Future generations will surely curse us for our sins if we screw up the food chain with mass extinctions and GMO foods and everything else. Again, these are things we are 'condoning' just like the Founding Fathers 'condoned' slavery.
We also (the United States) have the biggest stockpile of nuclear weapons on the planet, have all sorts of bio-weapons like white phosphorus, and use depleted uranium shells. Look at the kids in Vietnam with facial deformities because of Agent Orange. These are *our* sins.
The Founding Fathers outlawed use of 'cruel and unusual punishment' by the federal government. Yet we use waterboarding, have Guantanamo where we round up people for life without a trial -- when we aren't using foreign governments to torture them for information so our hands are clean.
I could continue, but you get the idea. I don't think anybody who declares the Founding Fathers hypocrites is doing anything more than making himself feel good. He is also just a parrot of the new conventional wisdom. Truth be told, some of the Founding Fathers did free their own slaves. Some didn't even have any. They did what they could for human freedom with the means they had. The question is: what are we doing?
One good book on all this that I highly recommend is here:
Everything You Know about the Constitution is Wrong: Edward James Snowden: 9781492364849: Amazon.com: Books
It is an eye-opening book on the U.S. Constitution and the federal system.