Lesson in, Law

   The family was in NYC, taking a cab, to somewhere, I'm not sure where now.  The cab driver had David, about 10 years old, sit in the front seat with him.  Traffic was heavy, and the driver cut through some area to avoid the tie-up.  Suddenly, the loudest sound I'd ever heard, the amplified voice from a police car ordering the driver to pull over.  He did so, and was confronted by a cop angrily telling him he knew better, that it was not a through passage.  The driver, who was some "minority" but I don't recall which, agreed with the officer in a most subservient manner.  He was let go with a warning to never repeat his transgression. 
    As soon as the police car drove away, the driver turned to David, in the passenger seat, and, most likely relieved but still agitated from his brush with the law, delivered a lecture in a stern and serious tone:  "Did you hear what I said?   I said Yes, Sir, and No, Sir. That's how you talk to the police. I didn't try to explain or argue with the police.  And that's what you should do.  Remember to be polite, agree with them.  Remember that!"