I watched a different video that panned wider. What happened was, the shooter steps in and tries to take the can of mace. The victim slapped him in the face to fend off the attack, stepped back, noticed another attacker approaching to his left, takes his focus off the shooter who also stepped back and drew his gun and shot the victim in the face just as he was raising his can of mace and spraying at the second attacker. So, the victim was not even spraying at the shooter and didn't even see the raised gun. The shooter was in no danger at all, wasn't even being sprayed. The other attacker was rushing in and then stopped before the spray hit him. It was a plain, out and out premeditated set up. They planned this in advance and were waiting for a moment when they thought the confusion of an altercation would muddy the waters enough to make a plausible self defense argument. That was the reason for the shooter to step in and try to get the mace. It was an attempt to provoke a violent reaction. Shooter gets it, then shoots. Unfortunately, I believe the police are in on this.  How else would the police make the case that the shooter was "security" so quickly? He had no CC license and no uniform to indicate he was security. Even the reporter doesn't actually look like a reporter.