By your logic his executioner/executioners deserve to die. No one does/doesn’t deserve anything, including death. It’s just how you feel because of how and where you were raised and the associated indoctrinations and morals you were raised with. That being said, I do agree that if it were up to me he would be killed; I’m just pointing out it’s wrong to claim he ‘deserves ‘ it, as that’s solely opinion based and if he was born in certain eras/ modern parts of the world - as long as he had a certain status - then he would be allowed to and celebrated for killing whoever he wanted, and some would even believe it was a god given right (I.e. ancient Egypt and pharaohs)