That's a rather pejorative way of expressing the point. (Thanks NPR.) It would be better to say that policing is about protecting law-abiding citizens from people who are acting antisocially and often violently.
Many of those people are simply criminals. They belong in prison, and often force is required to get them there.
Others are experiencing mental-health problems to varying degrees. Some force may be required, but it's a lot to ask that policemen also serve as social workers, psychologists, etc. The place I live has a parallel organization to provide this, and they work hand-in-hand with the police. It seems to work pretty well.
The lack of such a parallel organization is not a failing of policing, though. It's a failure our elected politicians, and perhaps ultimately ourselves.