Originally posted by Blair Wind
I've never understood the hero's defense against "no killing". I can most definitely understand no murder. Everyone should have the chance to be tried criminally (unless they are like Darksied and thus above human social constraints).However, Law Enforcement officers can and do kill - not murder. There is a big difference between the two words. Murder implies there was a choice and that the person could have been taken in or that you did the death blow due to an emotional reason where another option was available.
Killing someone for the greater good is something that happens in the real world - and I think some of the heroes (I can see Wonder Woman being for this) need to realize this. In this case, there is no other option for Joker. If you take him in you realize this is only a temporary respite until he breaks free and kills again. Those lives are directly in your hands if he continues to live.
Batman might not want to kill Joker to keep his own hands relatively clean - but I don't see how he can get upset if someone else kills him. At this point, the Joker has been allowed so many chances that if Gotham were Texas, he'd be dead.
Several of the League are killers through and through. Aquaman has let sharks attack villains (defenceless ones too), and we all know that Barry and Diana have straight up murdered people.
The problem is twofold, imo: I'm not sure they'd believe Batman would stop at the Joker. Outside of Aquaman, most of the League have only killed when they were pushed that far. If Bruce gave in and finally killed Joker after years of holding back, they'd have to wonder what the hell changed.
Bruce himself said how easy it would be to just give in.
Second, those in the league that don't kill would want to bring him in.
I just can't see him killing Joker without there being a massive shift in the status quo.