NO! That was not cold blood. That was the heat of the moment forced on the shopkeeper by a duo of criminals, with the dead one quickly forcing the issue on the shopkeeper, giving no time to consider all the things we consider while watching the video over and over. The shopkeeper did not have the overall view we have in the video. While he was turned toward the first criminal, the second one pinned him behind the counter, taking him totally by surprise. There was not time or perspective to consider all the things we can consider after the fact, watching the video.