Aardvark said:
Now although this is civil think of ex post facto
I think in writing this you failed to understand my viewpoint:
It is not the case that some time in the last few hundred years we passed a law making it illegal to commit crimes against humanity. We may have codified something like that, but when we did we codified something we understood related to universal, perpetual, unalienable human rights that had
always existed. Our codification of the concept may have gone some way to clarify it, but the concept itself is superior to any codification in law, superior to any constitution, superior to any written law.
In fact the concept is sufficient to justify the overthrow of states. I think in many ways the concept goes right back to the beginning of time--I think, for example, the Mandate of Heaven, in its way, is a 4000 year old expression of the same concept. Jefferson himself invoked the concept in his quest to justify the American Revolution, by asserting that the sovereign had essentially committed offenses against fundamental, universal human rights.
It has long been held that certain offenses to human dignity have "been considered, by just and enlightened men of all ages, as repugnant to the principles of humanity and universal morality" -- that's the specific phrase used by the Treaty of Paris in their efforts, contemporary with Jefferson, to abolish the slave trade.
I am not indicting Jefferson of violating a law enacted after his death--I am indicting him of having violated fundamental human rights which are universal and which have existed since the dawn of time.