Every Occupy Wall Street slogan was utter during the movie. Whether they were following a greater evil as you state (they didn’t know this, to them he was their savior), there was a lot of satisfaction in the movie by the masses in destroying the rich’s property, raping, killing and overthrowing them. The Government was evil, the rich were evil, every business leader corrupt, the oppressed under the boots of the champagne swillers, and the bad guy, though evil portrays himself as the leader of a successful occupy movement which pleases the masses in general. They never knew they were going to die, they were happy with the result and didn’t fight back.
I think you missed the whole point of the movie, which is that all those slogan was a facade underneath which is just nihilism, and that Batman fought to save the city from them.
SPOILER ALERT highlight below if you want to read.
Bane announced at the football stadium that if anyone attempted to leave Gotham he would blow up the city, showed them the bomb, and murdered the scientist right in front of them. He also killed the mayor in the box seats. I feel this occupation of Gotham was actually modelled on France, in both the German occupation in WWII, and in the reign of terror after the French revolution. The reign of terror part is with Dr. Crane (the scarecrow villan from the first film) being the judge sentencing the wealthy to exile or death. Modelling any characters after the French Revolution is not a compliment.
The situation also sets up a lot of heroism on the part of commisioner Gordon, who runs the resistance, and even his office rival. Most notable is the new character police officer who wants to replace Gordon, then becomes a coward who will not resist, but finally when the counter revolution comes, goes to the front of the charge and dies a hero fighting the occupiers.
Furthermore, look at the character development of Selena Kyle, the Cat Woman. She starts out completely sympathetic to the Occupier mentality, even before Bane arrives. She is the one who whispers, "You think this can last? There's a storm coming, Mr. Wayne. You and your friends better batten down the hatches, because when it hits, you're all gonna wonder how you ever thought you could live so large and leave so little for the rest of us."
But by the end of the film, she has switched sides, and her most memorable line: "You don't owe these people any more! You've given them everything!" And she is not saying that as someone just interested in money or the rich. She now has contempt for the people of Gotham, including the occupiers, that they are not worth fighting for. This story arc completely disavows the Occupy movement.