What we see is the extremely small fraction of millions of contacts made with citizens by police every day. They don't represent even a reasonable percentage of police. If they did the news would be full of these stories.
I'm glad I read your tagline. For a moment, I thought you were serious.
What we see are only the most extreme examples of police misconduct... the beatdown of a teenage girl inside a jail cell, the shooting of a wheelchair bound elderly lady (and the planting of drugs on her to justify the cops being in the wrong location), etc. What we DO NOT see are all of the stories of abuse that do not reach the levels needed to attract the attention of the media.
Lying, making false charges, illegal searches, threats, and less extreme examples of physical abuse are far more common than most people think.
(I have a neighbor who is a cop, and brags about what they "get away with" at our neighborhood block parties.)