In the most awesome comic-book superhero movie ever, the Joker's plans is simple: demonstrate how civilization is an illusion. He wants to show that, given the right trigger, anyone will abandon whatever rules society generally follows. The Joker is not insane. The Joker is the only one who can see the truth.
In other to achieve his goal, the Joker threatens to blow up a hospital if a certain man isn't killed by a certain time. When that plan fails, the Joker places explosives in ferries evacuating the city and gives a detonator to each boat that has the capability to destroy the other boat. Apparently all he needed to do was to have a sale...
Here's the summary: During Black Friday a Wal-Mart employee who was hired as a temp for the holiday season was trampled to death. This occurred as restless shoppers broke through the glass doors of the store, knocking over the employees on the other side and, quite literally, walked all over them. While the New York store was being evacuated, shoppers were told of the accident, but resisted the evacuation on the grounds that they've "been [waiting] on line since yesterday morning."
What the fuck is wrong with people?