That's what I thought at first too. But the way Arbery turned left and darted towards McMichael, that's self defense. Especially if he's going for your gun.
McMichael looks like a real POS racist. And may very well be. But as you said, this has nothing to do with race. They were chasing someone they thought was a thief. Since Arbery charged at McMichael, then it's game changer. It goes from McMichael being the aggressor to Arbery. Following someone after they're caught breaking the law (even trespassing) isn't against the law. Having a weapon on you, in this case, wasn't against the law.
Honestly, Arbery darting towards McMichael wasn't against the law. But this is where self defense comes into play.
This is from the Arbery trial.
"Believes is necessary." Of course necessary has to be reasonable. I think it's reasonable when someone is that close to you, coming quickly. If they just wanted to shoot him, McMichael would've walked towards the back of the truck and shot him at a safe distance.
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