I have a confession to make-it's not just the young black kids who think they're just duty bound to piss off every Cop who pulls them over. My own youngest son,white, now middle aged and solid as a rock,law abiding, hard working family man, was the same as the black kid you are talking about, in his youth.
He himself has raised four of his children to adulthood and not one ever ran a routine traffic stop into a felony, with their own lips. I believe that he learned the hard way, that sometimes the less pain, the more gain, and shared that knowledge with his children.
The answer is known to anyone who has taught both.