You people are amazing, I know literally every cop in the United States is Hitler reincarnated to the internet, but this wasn't a guy who got beaten to a pulp after the cop "forgot" he handcuffed him to a pole, or someone who got shot because he was "advancing" on a cop by sprinting in the opposite direction. The cop fucked up big time by not giving the guy proper warning and he should probably be put behind a desk and be reevaluated, but he wouldn't have had to if the guy didn't walk out with a gun. So yea, shocking news, sometimes bad things happen to people and it's partially their fault.
Or, you know, he missed and they ran away. What are you even saying here?