Goofs

When Sucre & Llosa arrest the young woman in orange, she has been handcuffed to the ceiling of the car. But then en route, soldiers simply drag her out of the backseat. No handcuff keys. No bolt cutters.

When they are searching through garbage, the female officer's mask (which is around her neck) appears on her mouth for one shot.

In the garbage scene, soon after the Marxism book is mentioned, the female cop changes positions in between shots.

There is a scene were Javier (the main cop) and Yolanda are talking about judging characters, Javier has the book in his hands. One shot, the camera is on Javier then goes back to Yolanda. In between those two shots, Yolanda's position changes.

The camera that Bardem uses to take Ezekiel's picture at the military checkpoint is a either a Polaroid Model 95 made from 1948 to 1953, or the Model 95B was discontinued in 1958. The picture that Bardem holds is a square format SX70 color shot identified buy its square format and black square on the back. This picture which could not have come from the camera used by Bardem.

Throughout the film, Ezequiel also denounces Chinese Premier Deng Xiaoping. Deng ruled China from 1976 to 1989. However, when Det. Lt. Agustín Rejas browses through several women's magazines such as Glamour, he encounters "recent" pictures of models such as Josie Maran and Gisele Bündchen. Maran didn't start her modeling career until 1990, a year after Deng left office.