The dead guy appears to be wearing the same hat (WWI helmet?) as the guy spraying the gunman with mace.
If that is correct, it is quite possible the gunman, a licensed security guard, was justified in defending himself, unless he is not licensed or employer authorized to carry.
I will wait to see the full video before making any conclusions.
The full video has been all over the place since yesterday. The murder victim was not wearing a WWI helmet, he was wearing a boonie hat. He was not wearing a BLM shirt,he was wearing a sarcastic version of one. And no, he did not get himself killed deliberately to support BLM.
It was cold blooded murder. The antifa guy hired as security stalked his victim, started a fight, and when he was shoved back, he drew and aimed. In a last desperate attempt at defense the victim fired the pepper spray as the murderer fired.
Earlier thread with a lot of info.
The gunman advanced into the fight.