I don't think you make good policy if you base it on the worst monsters. Why aren't guys like Cheney and Bush on that list? And if Cheney and Bush, then others from both sides of the aisle, but if we can't even bring ourselves to renounce them, do we have the moral authority to renounce anyone?
Personally, although I strongly oppose the death penalty, I recognize that I live in a nation that isn't that civilized. So I would be willing to have a conversation on what crimes are so bad that execution still makes sense. I think the selling of public office or abuse of public power should probably get the ax. Gross assaults on public safety or behavior that knowingly leads to great harm.
So . . . corrupt criminals and those who bribe them. And banksters who ran the scams that put millions out work and cost them their homes. Feel free to execute them. Maybe professional climate change deniers - the ones who push the lies not the dupes who believe them, although sometimes that's a fine line. And what about the mega-evangelists and other top religious frauds?
Who have you got at the top of your list?