I've discovered your problem. Everything is either all in your head or pulled out your butt.
It appears from this comment of yours that you beleive the examples given-police pulling guns on innocent HS kids and shooting random people in the head are imaginary. Sorry to inform you that both of these have actually happened.
Look for recent stories about Goose Creek, South Carolina for the High School story. It was a drug sweep gone very wrong. The video tapes made the national news just a few weeks ago. Where were you?
As for the random shooting-that has happened too many times to recount. Mostly during dynamic entries with or without search warrants for the wrong house. Averages one per month nationwide. Thanks to the good old War on Drugs, innocents die regularly.