I saw this movie last night and at first I'm like "meh" but the more I thought about it, the worse it became.
In a dystopian future Chicago, everybody is separated into five factions. The "Amity" faction are a bunch of hippy-dippy farmers, possibly sampling too much of their crop. The "Candor" faction "always tells the truth" which amounts to be that rude douchebag who says: "Yes, that dress does make you look fat."
But the main story is the conflict between "Erudite," "Dauntless" and "Abnegation." Make no mistake: the "Abnegation" faction which chooses a simple lifestyle and helps the poor (i.e. "Factionless") is the hero of the story. This faction runs the government but here comes "Erudite" - the brains of society - to take over. Because that's what the smart overclass does. Thanks Citizens United!
But wait: how can these pencil-pushing poindexters take over the government? Well, they take control of the "Dauntless" faction by literally turning them into mindless drones. Maybe I'm overreacting but this struck me as a calumny against the military as a whole.
The movie is full of insults to the intelligence, large and small. There is one annoying character who exists only to bad-mouth the protagonist (Tris); we get it, dude, you're here to introduce conflict. The Abnegation father, who has clearly never touched a gun in his life, turns into shotgun-pumping Rambo. The movie closes with our heroes "riding the train to the end" which means something, I don't know what.