At 24 seconds, while although trying to exit, the suspect is turned sideways with hatchet in hand.
But, let's say he ran and it was a clear shot in the back. Why must a threat be immenient to demonstrate justification? For instance, a failure to 'unjustly' kill could lead to short-term mortal retaliation. I've watched a lot of monster movies. People who have the chance and don't take it are often killed later. What we need are more good guys getting killed by returning sociopaths. That way, what seems unjust would be seen more favorably. So, let the monsters get away and hopefully these hatchet-thieves will successfully kill the 'bad guys,' making them then good guys and the thieves bad guys instead of the hatchet-thieving victims but instead monsters. You liberals don't watch enough horror flicks.