Good try old son... 141 countries ..THAT is.... THE fact. Unless of course you want to say the UN is irrelevant.
"Who are the top of the class mass murdering nation on planet Earth last 50 years.?." Clever chap with your ambit.... so loose it's totally undefined, claim.
Why don't we go back over the last 100 years? Then we can include your mate old Joe S. Whooops, 7 million Russians added to the pile. Fingers in the ears time?