When he chases after a 17 year old kid after referring to him on a recorded call to police as a fucking punk and saying " these assholes always get away" it's clear he went after him with intent other than simply asking him what he was doing in HIS neighborhood.
The reasonable minds in this thread have all agreed that his injuries were minor, and as such you should stop pretending they were more than they were. You can't chase after somebody and instigate a fight and then simply pull your gun and shoot them if you don't get the better end of the exchange.
5 minutes w\ Zimmerman on the stand is all you'd need to show that he was grossly negligent in all of his actions that night. Calling the police on random people as he'd done many times in the past... fine. Exiting his car and chasing after somebody while muttering ' fucking punk ', not fine. He clearly had a pre conceived notion of who Trayvon was without having witnessed him actually do anything wrong.
Simply a sad case of mistaken identity in that he assumed Trayvon to be one of the burglars they'd had recently... sure.. But that doesn't excuse his actions one little bit.
Actually, you can. The law has been explained 100s of times already. That's why it's so easy to dismiss all your "what ifs" with zero evidence showing that's what happened.
When on back (eye witness, forensics), mounted (eye witness, forensics), screaming for your life (eye witness including zimmerman stating immediately when arrested it was him) after being brutally beaten (multiple injuries on front and back of head) legal precedent showing this automatically puts one in reasonable fear for their life you are legally allowed to stop the threat with whatever force necessary including lethal. That's the LAW.
Can you say what crime zimmerman was committing? No, so he wasn't in commission of a crime.
Was zimmerman legally allowed to be where he was? Yes
Was zimmerman in reasonable fear of his life? Yes, precedent says when on back and your attacker is on top of you, that automatically qualifies as reasonable fear for your life or great bodily injury.
To qualify your wild ass what ifs let's go further...
Was zimmerman trying to retreat? Yes, but was prevented (eye witness)
Was zimmerman trying to disengage and making his attacker know this? Yes (eye witness)
Was zimmerman in reasonable fear of life/bodily injury? Yes, being on back and mounted automatically qualifies that.
So, EVEN IF HE WAS INITIAL AGGRESSOR, he can still lawfully shoot. We have eye witness and other testimony and physical evidence that proves beyond a doubt it was lawful self defense.
There - those things prove it was self defense and there can be no doubt. Until you have something that can prove those 3 criteria aren't met, it shall remain self defense.