Susan De Guardiolia has confronted the bureaucratic agents of tyranny, and she won:

Fundamentally, the routine expansion of what can only be described as a creeping police state can be stopped by citizens who know their rights.

You do not have to be a lawyer to do this.

You simply have to know a few things:

• Am I being detained?
• If the answer is no, leave.  If they refuse to answer, repeat the question, politely.
• If a policeman asks to search your belongings (including vehicle), then they need your consent to search.  Clearly state your refusal to consent.

Police officers will frequently make voluntary compliance appear mandatory. 

Know your rights.