I think some of those myths propagated by movies and books where police have to read your rights, identify themselves etc, etc are what get people in trouble with the police. It's a lot better to cooperate rather than refuse to, annoy the officer in the process [for questioning his authority] and have him/her get rough. Recently in Hollywood, a black actress was asked to show her ID to the police. She refused to. And what followed? Count on the media to play the race card any time. Had she complied with the police officer's demand to see her ID, she could have avoided being man-handled. Should a police officer ask you questions [if you haven't committed a crime] then just answer the questions.