Brave people can't chase down a crazy gunmen who killed someone? Think a little more like a defense attorney for bicep guy, see how the defense attorney would try to present the actions of bicep guy. The defense doesn't have to be right the defense just has to make a juror question whether bicep guy was really the aggressor or a good samaritan instead.
Running towards the threat doesn't prove one is not afraid by the way.
Kyle hadn't just killed someone. He wasn't crazy. And no, you don't have the authority under any law to chase down a suspect if he's running away. That's clear letter law. You can't be the aggressor, claim self defense, AND claim you were in danger. Illogical to claim those facts can exist simultaneously.
I've seen nothing saying bicep guy was a Cop, a security guard or anything else that granted him law enforcement or public safety authority.
Unlike Cops, you have to wait until the assumed threat actually makes a move to harm you or someone else. Kyle was defending himself. He didn't initiate any attacks.
I never said he was afraid. Being "in fear for you life" means you think someone is about to try and end you. If he had that feeling, why did he attack Kyle and not just shoot him down? That's the #1 way to prove you were in fear for your life. If you don't shoot, or you fire a warning shot, you can't use that defense.
I was in fear for my life, so I ran after the guy carrying an AR-15 even though I never saw what people said he did. Then I tried to take his gun from him.
Doesn't present a compelling defense at all. He was part of the mob and armed. He was role playing, and it got real for him. He could have died. Making like he was a victim isn't defensible.
You sound like the Barrister on Patriot Games, when Jack Ryan got a terrorist (Sean Bean) arrested after killing his brother during an attack on the Royals. That lawyer also tried to claim Bean was like Ryan, an innocent passerby who was trying to help. Just ignore that he had a gun in a country where you can't carry, and was wearing a ski mask just like the other terrorists. He also happened to be the brother of a dead terrorist killed on the spot.
I'm sure the lawyer can claim anything they want. What I'm telling you is there are more facts than just the highlights. Details (and video) will show that bicep guy was not defending anyone, especially himself.