Detectives work on one case at a time and have all the time in the world to solve it. They will find the unsub if it takes years.
Every cop is a computer genius and can do anything on the computer. They never have to ask for help (I love that Criminal Minds actually has a real computer expert that the agents defer to).
When engaging in a high speed car chase down a narrow alley. A van will always back out of an adjacent alley between the perp vehicle and the cop car. Said van will stop dead, and be unable to shift into any foreword gear.
When a perp is running from the cops and suddenly his escape route is blocked by a police cruiser, the perp will never think to run up and over the hood and roof of the car.
When trying to hack into government servers the resident computer geek (or detective) will always say “Damn. It’s password protected”.
In 2007.
I have 70 year old neighbors who know they need encryption on their networks.
The hacker will then get into the system in seven seconds by slapping the keyboard like a chimpanzee.
Anything you hide behind, including a wooden fence with thin slats, a barrel made out of 1/4" thick aluminum, or even a chain link fence, is sufficient to deflect bullets.
Getting shot in a non vital area really doesn’t hurt that much.
Going through a plate glass window will not cause you to be cut.
Getting your lungs perforated by machine gun fire will not in any way hinder your ability to scream at the top of said lungs.
If you are shot while standing near a rail, even a chest-high rail, you must fall over it.
I did put a U.S. slant on that without thinking, sorry. The intended irony was that German Shepherds are the most common police dogs in the states in actuality, but not so much in movies.
In Lethal Weapon 2 the captain tells Riggs and Murtaugh, “Murtaugh, all that damage you caused downtown is comin’ out of the department’s budget!”
“Fine. Pay it off in Krugerrands,” replies Murtaugh.
Whenever there’s a parking garage scene it’s a sure bet there’s going to be a big car chase through it and lots of shots fired, because all those concrete pillars and parked cars make for good ricocheting bullets and exploding cars.