There were no videos of Martin and Brown being 30-odd feet away from Zimmerman or Wilson when they were shot, nor was Martin or Brown shot in the back. But really I'd say that you are the one who learned nothing from the Brown shooting. In that one there were witnesses who saw what happened and came to a conclusion that bore no relationship to what happened. In this case you watch the video and somehow conclude that Scott had it coming to him.
if he shot that cop with a tazer, the cop simply followed his training. If he got tazerd..he walks.