Continuity mistake: In the burly battle at the end of the film, in which a couple dozen guards are dispatched, Preston's white Nehru jacket remains spotless. Even after he kills DuPont, there isn't a speck of blood on Preston's jacket. Moments later, in the Father's broadcasting room, Preston now has a considerable neck wound and a quantity of blood staining the jacket collar and shoulder. The DVD lamely attempts to explain this delayed bleeding as a bullet wound that Preston sustained while fighting DuPont. However, after Preston shoots up the broadcasting room and finally exits the Equilibrium building, the blood stains have mostly vanished from the shoulder and collar of his white jacket.
Revealing mistake: When Preston executes Partridge, as Partridge's head tilts back, you can see that it is not Sean Bean, but a stand-in who more resembles Val Kilmer than he does Bean. (00:17:42)
Character mistake: The red ribbon with Mary's scent. Preston always holds it in his right hand and keeps it in his right pocket. However, Yurig (the leader of the Underground), during Preston's low detector test where the Resistance is ensuring that Person really has begun to feel human emotions, Yurig says: "you carry a ribbon with her scent in your left pocket. You smell it sometimes when you think no-one is watching...etc." But it was never in his left pocket, always in his right.
Continuity mistake: Mary O'Brien is trying to collect herself before entering the execution chamber. If you take a closer look, you'll see cleric Preston standing right behind her. He is supposed to arrive in front of the execution chamber only after Mary has already stepped inside it and the lock has been engaged. (01:21:25)
Factual error: When the SWAT trooper is executing the dogs, he does so with a WA2000 sniper rifle...which both he and the film treat like a shotgun. The actor moves his hand back and forth along the underside of the weapon, miming working a pump action that his gun does not have, and the audio matches with the sound of a shotgun being cocked.
Chosen answer: As I see it, the point of the speeches is not to evoke emotions in the listeners, but rather to show what emotions such as anger and jealousy lead to in the course of human history. So they use historic "evidence" to justify their actions (such as killing sense offenders) and to show what emotions can lead to.
Andreas[DK]