It emerges that a few hours earlier, this young man walked into a bodega, grabbed a handful of cigars and started to walk out with them without paying. Confronted by the shopkeeper, he shoved him out of the way, knocking him down, and left. The scuffle seemed almost comical, as the young man was 6’4? and weighed 290 pounds, and the shopkeeper looked to be about half that size. But the big man took what he wanted, because he could.
No, that’s no reason to shoot him, but it’s the reason why he’s dead.
He’s not dead because white cops hate black people (and some do).
He’s not dead because America is still a racist society (and it is).
He’s not dead because there are only three black cops on a police force of 50 (and there are).
He’s not dead because there’s no justice (any lawyer can tell you there isn’t).
He’s not dead because he was black (and he was).
He’s dead because he was stupid.
Well, it seems to me he’s dead because of the form his stupidity took: He’s accustomed to using his size to cow or physically subdue opposition. So he apparently bull-rushed a cop who was pointing a gun at him.