Given the wars of conquest that have occurred in history with oppression and high taxes dating back to several thousands of years BCE, I am honestly not sure that slavery is the gravest crime.

Genocides, literally millennia of fighting over the same pieces of land, etc, etc. Slavery is one of the greatest crimes for certain but there is almost no limit to the depravity that humans inflict on each other.

But interesting to note that a nation state created because of guilt over genocide that has specific moral and legal laws that condemn slavery because of enduring slavery in Egypt voted against it as well.

Even if I was unsure of the semantics of the greatest crime, I would vote for the resolution.

I wonder about what occurred before recorded history. Not too hard to imagine various hominids duking it out amongst not just themselves but with tribes of humanoid variants. Evolution is a hard taskmaster......

No surprise

Our government sucks

But slavery will do.

Of course it was and shame on trmp for voting it down. Fifty-two countries are scared of him.