I appreciate his argument, of needing to protect Felicity and his son. But, then she was more than willing to be a participant in his spree.
It would be to much for CW to really enter in the debate about whether killing bad people is ok because they are “bad” people. But, I also think about the Judge in this week’s episode. Yes, he was excepting money, but Diggle’s action directly led to his killing. Legally responsible? Perhaps not. Morally? Yeah. And they sorta shrugged it off. Did the judge meet the hurdle of being bad enough to die without a trial?