Storm Troopers, of the Star Wars or Nazi type, is a fitting analogy. The police of today are not sending the message of "serve and protect" but rather "beat and destroy." We don't see this so much in the suburbs, but who knows...it could be coming.
The catalyst for my comments is the recent story about the trial of several officers involved in the death-by-beating of a homeless man in California. His name was Kelly Thomas and you can see the entire beat down on YouTube (if you have the stomach to watch it).