Quote Originally Posted by Somecrazyaussie View Post
It is. A good defense attorney could easily spin the Joker's actions as being born from a deranged mind. For starters, he took a dip in a chemical bath. An experience that is highly traumatic. They could also argue that the chemicals screwed with him on a biological level. Fundamentally altering his brain chemistry.

If the Joker just straight up killed (shooting them etc) people, he could be in trouble. But the way in which he goes about killing them often involves methods that are so bat-shit crazy that there is no doubt he isn't right in the top block.
Like jetengine said, it's not enough to just be deranged or traumatized or whatever. You have to literally be so far gone that you can't comprehend what you're doing, what the consequences are or why you're being punished.

Joker running around doing things expressly to break people's spirit/sanity/sense of morality/etc. shows that he understands very well what he's doing and what the consequences of his actions are. He just doesn't give a damn.

Besides, I'm pretty sure Joker's just straight-up shot or stabbed people plenty of times.