@Renegadesoul:
A proper execution will never come to being when you have no one to execute properly. The problem lies in that premise.
I think you got the facts wrong. I do not see any action pointing out to Akainu being hotheaded and desperate. In fact he was calm enough to devise a plan to prevent Ace from escaping.
Who responded to Akainu's taunting? Ace
http://www.onemanga.com/One_Piece/573/13/
Who attacked Akainu because he was angered by it (sign of hotheadedness no pun intended for his title and df)? Ace
http://www.onemanga.com/One_Piece/573/14-15/
Who was pawned because of his actions? ACE!
http://www.onemanga.com/One_Piece/573/16-17/
Now tell me who is hotheaded and desperate.
anyways, now that I reviewed the incident, Ace was not executed by Akainu, he interrupted Akainu's attack and was killed in the process. Now that is called a sacrifice not an execution. Akainu is absolve of this act of execution you are branding him with. Oh wait, its a WAR!!!… people are going at each other with the intention to kill the enemy to achieve victory.
You were implying that those prisoners are on the death row to defend your point that Shiryuu was killing prisoners that are going to be executed by the WG, which is not the case. Its a different example to those pirates involved in this war. You can not prove it either.
Perhaps 'desperate measures' wasn't the proper term to use. 'Extreme measures' is much more fitting. Akainu is by far the most Bellicose of the admirals. He was the man who opened fire on an evacuation vessel for the remote possibility that it harbored criminals. He is prone to excessive violence and is thus hotheaded in that manner. He wasn't aiming for Ace, but he was using lethal force. He resorted to killing instead of crippling and capturing, which he could have easily done.
In Impel Down, I never said that every prisoner was meant to be executed. If you actually read my posts well, then you would understand that I've been trying to establish the difference between execution and plain old killing. Any one of the tortures in ID is a death sentence for a regular human. Either way, that doesn't change my original point that Shiryu had the authority to kill any prisoner in Impel Down (inferred from Magellan's authority).
@AdmiralYonkouMt.Bandit:
They're meant to suffer and be torture, not necessarily die. Again. I don't see why Shiryuu can't kill ppl with life sentences and why you claim he wasn't killing those type of prisoners.
I can see any lvl 1 prisoner being in there for a specific sentence and released after.
With your reasoning about ID and regular jails Arlong belonged in ID and Buggy didn't.
LOL @ the American legal system part.
This has nothing to do with an expectation of leniency on part of the WG. When Buggy led his breakout all of those lvl 3 prisoners were talking about giving up crime/piracy and going back to their families until Buggy convinced them not to. In this rare case being tortured in ID has proved to be a deterrent to crime in the OP world since we can assume going to ID or any jail isn't the same as modern day criminal institutions where it's a revolving door for criminals/making them repeat offenders.
I honestly don't get why you guys are arguing this point so much, seeing as it is irrelevant to the main point. I wasn't on my wits when I said that they were meant to be killed because I didn't even review what I had said and made the classic mistake of believing that the responding poster actually had. I highly doubt that anyone has ever been released from ID, but that doesn't change the fact that, once again, Shiryu had the authority to kill prisoners as he see fit and yet his actions were still frowned upon.