Continuity mistake: When the Apes are trying to break into the mutant's church, Mendez looks towards the Alpha/Omega bomb, and is wearing a cream-colored jumpsuit with a purple sash. When the Apes do break in, his sash has disappeared. (01:25:50)
Factual error: At the beginning of the film as the camera follows the security sergeant he taps a man on the shoulder. The man was standing next to the crossroads signs in a camouflage poncho. As he turns, you can see that he that he is wearing jeans and not a standard uniform of the era under the poncho. (00:00:35)
Continuity mistake: When O'Malley's lawyer arrives in front of the precinct, no protester is left in the street, at least the part behind him - in the following close-up though, in the background a few extras populate the frame. (01:06:05)