The victim has rights to be protected. Others also need law and order to be enforced to protect them. I was asking for your stats to show a link between your claims. Don't try and ignore what I was asking you in my last comment by switching your narrative.
The state represents the victim in a case of crime. What is the direct and clear link between those lower crime rates and the laws with the death penalty? If a clear connection between those two can't be found then this is just a non sequitur.