You're something like a chihuahua, aren't you?
First, it is manifestly not true that every human being has agreed that there is a right not to be killed.
So, you're arguing for arbitrarily killing?
Second, your "arbitrarily" weasel word is a painfully obvious attempt to wriggle out of difficulties (killing in self-defense, execution as punishment for a crime, etc
I'm against the death penalty. And apparently you, unlike me, are against self-defense.
Steve, stop trying to defeat my positions and start examining how foolish and stupid some of yours are. Don't make me offer you a burger from the Gunga Diner.
"Trying"? You flatter yourself amongst the broken wreckage of what passes for your "position".