How would you define “police state”?
If the public at large feels wary of, angry at, or intimidated by the police, then we have a “police state”......as opposed to a public that offers and gets positive support from a police force that defends and works for the citizenry.
The direction of public perception in this matter is not clear. Unlike many countries, we Americans don’t put up with BS or attempts at intimidation from “public servants” for very long.
What century did you write this in? You certainly haven't been to an airport recently.