We get to see the robo-spiders in action when the police are sweeping an apartment building to find Tom Cruise. Instead of thermal optics, or sonic detectors, or calling the gooey people back at base who know the future, the cops deploy terrifying autonomous spiders that slink through cracks in every apartment, then leap onto the tenant's faces and blast them in the face with a laser. If you're not the suspect, the retinal scan will register that, and the spiders simply crawl away -- no harm done! Oh, except for if you cover your eyes. Then there is so much harm done, because they'll tase the holy spirit out of you.
"It's okay, sweetie. Let the terrifying robot onto your face so it can sear your eyeball. God bless the Pre-Crime police for protecting you from trauma."
The weird thing is that people seem to accept this. We see a mother teaching her kids proper spiderbot-face-rape protocol, a young couple annoyed when their sex is interrupted by giant spider attack, and an older couple who barely pause their argument for ambush arachnid laser eye blasts. This is a world where murder has been eradicated, yet we've traded that for robot home invasions. The Justice Department is legitimately concerned with the civil-rights implications of pre-crime, but has no problem with nightmare drones that torture you into complying with invasive searches? And speaking of searching, how thoroughly do you need to search an eight-year-old blonde girl to figure out if she's Tom Cruise? Do you really need to crawl down her goddamn optic nerve to solve that mystery? We're starting to think these cops just get off on traumatizing children and robot cockblocking.