"Your papers!" In old movies, the demand is barked at trembling travelers by a Nazi with a guttural accent. If the demand is made in the opening scene, then the audience knows immediately that they watching a totalitarian state in which travelers are in danger.
"Your papers!" now rings out at every American airport and border crossing. The accent is different but travelers need to recognize with equal immediacy that a totalitarian state is playing out in front of their eyes, and they must be careful.