You’ll never get the lefties to learn anything at a “teachable moment”. They think it’s their job to teach you what to think.
Obama once tried to foist a teachable moment about race. He failed, of course, because he had no real moral ground to stand on. The complaining party was a racist black professor and the cop was professional and conscentious. This, like before, is the intentional and unfair slander of an entire social group, in this case a whole race. Why allow the injustice of these racism deniers to stand? It will only get worse.