Mace is a repellant weapon, not the same as a knife or gun or lead pipe. Person getting maced did not need to be involved and coudl have ran off to get away from the mace and clear out and go to the cops. If the guy did not persue him with the mace then cleary there was no imminent danger. The law needs to clearly criminalize vigilantism and stop this bullshit stand your ground means I have the right to stand here in the open public and if you use a non lethal weapon I dont have to run or evade or deescalate, I can just take out my gun and blow you away.
First let's get the context of the situation correct -- The security guard in this situation was "stepping back to get away from the stream" in an effort to deescalate -- the obviously armed attacker was aggressively rushing the security guard while spraying bear spray. Keep in mind that the aggressor had already punched the security guard knocking off his hat & glasses in a totally unprovoked assault. If the armed aggressor already attacked the victim by punching them and is macing them as the aggressor in the situation --- then the victim of the unprovoked attack certainly has reason to believe imminent danger of getting severely hurt and can use deadly force. As written in Colorado state law. IMO this is an obvious case of self-defense under Colorado Law --- but we will see what the legal system decides. You might want to keep in mind that this is an armed security guard paid to protect a news crew - he simply not run away and meet the expectations of his job. He must stand his ground -- which is allowed under state law --to protect the news crew. He already attempted to back away to deescalate -- which was already going above the requirements.
Con. logic dictates it does as you may become impaired and disarmed. For similar dynamics look at con defense of police officer who shot at man who stole his stun gun and was fired upon
Trayvon was the physical aggressor and physically assaulted George Zimmerman. Trayvon was shot when he was sitting on top of George Zimmerman punching him. Florida held a trial - the justice system found George Zimmerman not guilty. This being said there were no winners in this situation -- and it should be noted that both Trayvon Martin and George Zimmerman had plenty of issues.
More info... Police identify security guard suspected in fatal shooting during Denver protests Matthew Dolloff was working as private security for a television station https://www.denverpost.com/2020/10/11/denver-protest-shooting-suspect-9news-matthew-dolloff/ Police identified a 30-year-old man as the suspect in a fatal shooting during dueling protests Saturday in downtown Denver. Matthew Robert Dolloff remained in jail Sunday on suspicion of first-degree murder in the shooting, jail records show. Dolloff was working as a private security guard for Denver television station 9News when the shooting occurred, the television station has said. Denver police arrested Dolloff on suspicion of shooting and killing a man after a confrontation at the protests downtown. The man who died has not been publicly identified by officials. Photos of the incident show the man slap Dolloff and use pepper spray. Dolloff then shot the man, according to the photos. Police detained Dolloff at the scene. Hundreds gathered at Civic Center on Sunday for the two demonstrations. Dozens of socialists and communists scheduled a food drive as a counter-protest to a planned rally by conservative groups.
Shoe on the other foot, cons would be saying that the mace sufficiently incapacitates a person to where they can't properly defend themselves, thus the perception that their life is in danger is reasonable.
I would say yes to your question. However, I haven't seen the video or photos that illustrate the series of events you laid out in your question. If there is video that demonstares that scenario, please let me know where it is. Everything that I have seen starts basically at the slap/punch. What happened before that? With respect to the stand your ground law in Colorado, I don't think that it is as clear as you think. There is clearly subjectivity to the law. I am not familiar with any case law regarding stand your ground in Colorado. For example, look at the language below from your post: 1.1 How much force can you use? You can only use as much force as you reasonably believe is necessary to protect yourself. In many cases, this means only using as much force as you are being threatened with. However, the degree of force that is justified depends on the situation. Example: Paul punches George. George takes out a gun and shoots Paul. George may have used too much force for a self-defense argument.
How do you know it was "totally unprovoked assault"? From the pictures that you posted, I don't see that series of events with any reasonable certainty. The pictures are not in chronological order so it is hard to tell what exactly took place. It would be much better if there was a video. After looking at the pictures, it looks like the following scenario took place: The security guard pushed the guy that got shot. The guy that got shot then hit the security guard. The security guard drew his weapon. The guy that got shot pepper sprayed him. The security guard shot him.