Corrected entry: During the Task force tunnel raid, not a single person is wearing hearing protection. Delta Force, nor CIA nor FBI would be running an operation with naked ears. Also a Delta operator gives Emily Blunt a hard time by saying something like "stay in the back, keep your safeties on, don't shoot any of my guys", um, really? She is a SWAT qualified veteran FBI field Agent. I highly doubt a Delta Operator would say something so unprofessional to a Team member.
Sicario (2015)
1 corrected entry
Directed by: Denis Villeneuve
Starring: Josh Brolin, Emily Blunt, Benicio Del Toro, Jon Bernthal
Character mistake: After Macer shoots the shotgun man during the house raid, she checks his pulse without removing the weapon from his hands first.
Title Card: The word Sicario comes from the zealots of Jerusalem, killers who hunted the Romans who invaded their homeland. In Mexico, Sicario means hitman.
Trivia: Originally, Alejandro was meant to have much more dialogue, and his tragic origin would have been revealed earlier in the film. Actor Benicio Del Toro and director Denis Villeneuve ended up agreeing that the character worked better as a silent, mysterious type and that the revelation of his origin should occur late in the film. It is estimated that as much as 90% of his dialogue was deleted during rewrites.
Question: A major scene and gunfight take place right after the convoy crosses the border and is forced to stop in traffic. The members of the convoy scan the surrounding vehicles and find two filled with men carrying weapons in full view, not to mention the occupants looking like stereotypical gang members. How did those two cars cross the border in order to be in the same slow traffic - surely border control would have stepped in? How did they come to be there for the attempted ambush?
Answer: They haven't crossed the border yet, and the gang members were there to kill them. They had no intention of actually crossing the border.
Correction: It is made clear that he does not respect her, and that her purpose is only to make the task force legitimate. It is not a mistake that he was condescending. Additionally, they may well have been wearing in-ear plugs to protect from the sound of firearms.