Did you notice how the officer was constantly tucking himself around the corner? He had no way of knowing whether there were more individuals waiting to ambush the officers. And that is a perfectly justifiable fear given the context of this situation. And the victim in this case reached behind his back multiple times, even after being told precisely not to. He could have been reaching for a weapon or it could have been something for more dangerous - imagine he was reaching for a detonator. It's easy to condemn the police officer, but at the same time this shooting took multiple unbelievably provocative actions on part of the victim to reach this point: point rifle outside hotel room apparently in vicinity of other hotel guests, decide to reach around back when specifically told to keep hands visible, repeat that mistake and reach even more directly towards your waist. I obviously can't condone the act, but on the other hand I also can't entirely condemn it either. It's an extremely unfortunate scenario.