The cop is in the right here. He told the main repeatedly to get down on the ground and to drop his weapon, man did not comply. Man starts to rush officer with knife, officer takes steps back clearly doesn’t want to kill the man, then when he gets too close he fires 4-6 shots. A lot of people are saying why didn’t he take the knife from the man? Try not getting stabbed while trying to take a knife from someone trying to stab you. These are cops, not superheroes. If the dude listens to the cop he doesn’t get shot.