It's summed up well by the Joker in the 2nd Christopher Nolan batman movie: JOKER: You know what I am? I'm a dog chasing cars. I wouldn't know what to do with

It's summed up well by the Joker in the 2nd Christopher Nolan batman movie: JOKER: You know what I am? I'm a dog chasing cars. I wouldn't know what to do with one if I caught it! I just do things. The mob has plans. The cops have plans. Gordon's got plans. Y'know they're schemers. Schemers trying to control their little worlds. I try to show the schemers how pathetic their attempts to control things really are. So when I say that you and your girlfriend was nothing personal, you know I'm telling the truth. It's the schemers that put you where you are. You were a schemer, you had plans, and, uh, look where that got you. I just did what I do best. I took your little plan, and I turned it on itself. Look what I did to this city with a few drums of gas and a couple of bullets, hmm? You know what I noticed? Nobody panics when things go according to plan. Even when the plan is horrifying. If tomorrow I told the press that, like, a gang-banger would get shot, or a truckload of soldiers will be blown up, nobody panics. Because it's all part of the plan. But when I say that one little old mayor will die, well then everybody loses their minds!