If you do not believe that the death penalty is appropriate to some crimes, why do you carry a weapon capable of causing that exact result? (Note: This is not sarcasm; I'm genuinely interested in how those two positions can be reconciled.)
I know you didn't ask me but I'm going to answer anyway. I'm just that way.
Self-defense is not the "death penalty". We don't carry a gun to kill people who hurt us. We carry a gun to stop those people from doing whatever it is that would injure us. IOW, we shoot to stop, not to kill. If they die anyway then so be it.
However, if you act just to ensure that the attacker is dead after they are no longer a threat then you should be charged with murder (see the OKC pharmacist trial). If the threat isn't IMMINENT it's not self-defense.
If the guy standing in front of me is holding a gun & telling me to give him all my money or die then I'm pretty sure in that instant I know exactly who the BG is. I am acting under exigent circumstances. I have to act NOW! or someone is likely going to get hurt.
I can even accept the fact that the person who gets killed might not have even been a BG at all (mistaken threat assessment, innocent by-standers, etc, - even though that is fairly unlikely in most situations). People make mistakes. As long as that persons actions were deemed to be reasonable knowing what they knew & they honestly believed they had to act to prevent serious IMMINENT harm to themselves or others then if an innocent person is killed, well, sometimes unfortunate accidents happen.
It would be the same if a cop, who is a state agent, killed a BG to defend themselves or another person from imminent harm. I am OK with that as long as the cop had a REASONABLE belief that he HAD TO. But I wouldn't be OK if that same cop (the "State") decided to just kill the BG after they were no longer an immediate threat to them or that other person.
Would the cop (the "State") killing that person be somehow suddenly OK if there were a bunch of by-standers who saw what happened saying "kill him!"? Nope. I think that is called a lynch-mob & is fairly well frowned upon in most societies.
I fail to see how that is substantially different than giving someone the death penalty. In a trial you have a bunch of people who weren't even there to witness exactly what happened, listening to a bunch of other people who all have a stake in the outcome trying to get them to believe their version of the story & then making an IRREVOCABLE DECISION on the fate of a human being when that person is no longer an imminent threat to anyone.
Manson orchestrated the murders that night... I don't remember all the particulars, nor if he personally killed anyone, (nor am I inclined to look that up at the moment) but he was responsible for their deaths.
In a similar case, a person was responsible for initiating the acts of (if I recall) 22 young males who boarded four airplanes and crashed three of them into buildings, the fourth crashing into a field in the largest mass murder in a single act on American soil in American history. Would you agree that OBL deserved to die for his acts? If he didn't, who ever deserves to die for the crimes they commit?
Ok, here goes...
You say OBL deserved to be put to death because his crime was that he killed 3000 innocent civilians who were no physical threat to him or his people at all, even though he truly believed that the US was a danger to his people because of the policies of the US government. You say it was "murder". I agree.
Since we now agree on the parameters of that word as used in this context, what would you call orchestrating the (ongoing) killing of ten's of thousands of innocent civilians who were no immediate threat to anyone just because of the policies of it's government, which was also no IMMEDIATE threat to anyone?
I guess we would call THAT "war". So, who deserves to die for THAT crime? No one? If so, who ever deserves to die for the crimes they commit?
Now let's move forward with that same analogy.
If a country attacked us unprovoked we must defend ourselves because the threat to our well-being is imminent. It is RIGHT NOW! (remember, If the threat isn't IMMINENT it's not self-defense). I don't like it but I realize that some innocent people are going to be killed but we have to act to defend ourselves from that imminent threat. I'm sure you can see the parallel here with what our society accepts as lawful & reasonable "self-defense". We counter-attacked the "country" because it attacked us first just like we counter-attack a "BG" to defend ourselves when they attack us first.
But now let's say that we have won the war (just like in individual self-defense when we have subdued the BG & he is no longer a threat). Is it somehow OK to later execute every surviving person in that country since their country attacked us first (IOW, "murdered" our country-men)? I doubt it. That's not the way civilized societies do things. We may keep them under our strict control for a while just to make sure that they don't get out of line & become dangerous again but that's about it. WE DON'T KILL EVERYONE IN THE COUNTRY FOR THEIR CRIME. We don't even TYPICALLY execute all members of their government either.
I will add that I agree with NYFelon in that I understand the desire for the death penalty. And I think it is POSSIBLY useful as a crime deterrent - but even that is debatable since there are many countries with the death penalty for NUMEROUS crimes but they still have those crimes & are even otherwise some of the most dangerous places to live. Most of Europe has no death penalty but they have historically low crime rates while the US & many third world countries have the death penalty but have significantly higher crime rates. But I just can't justify it's use if even one innocent person is put to death outside of that IMMINENT threat.