While I think Zimmerman should have stopped following Martin once the police were contacted, following someone on a public street is not actually illegal in any way in Florida.
Wait until you get a girlfriend and ask her how she feels when some guy starts following her on the street. It may not be illegal. But that is not the same as being innocent.
Then he was promptly jumped and attacked by Martin.
That is Zimmerman's story. Whether that is factual or not cannot be determined any more because the other person is dead.
Zimmerman wouldn't have had a chance to try to flee considering he was on the ground getting pounded.
That would be after Zimmerman decided to follow Martin and got out of his car and kept following Martin. Even if the events happened in that way it is a bit strange to talk of fleeing AFTER the confrontation that Zimmerman apparently wanted had happened.
That lead to Martin being shot.
No. Zimmerman could have NOT carried a gun which is what the neighborhood watches recommend. Zimmerman could have stayed in his car which is what the neighborhood watches recommend. Zimmerman could have NOT followed Martin which is what the neighborhood watches recommend. Only after breaking each of those rules was Zimmerman armed and in a fist fight.
Since he was losing the fight, he shot the other guy.
If it were up to me there would have been no conflict, or the mere sight of a gun would have scared him off and it would have ended there, but let's be clear about this: if you want to violently attack a stranger who has not initiated violence against you, you are taking a risk
Except that it was Zimmerman who initiated the conflict by following Martin. Again, when you get a girlfriend, ask her about a stranger who starts following her.
We already have states where homeowners hesitate to shoot a home invader because they might get in serious trouble, and all this does is lower the risk of burglarizing the law-abiding which in turn can only make burglers more bold.
So a burglar is more bold because the homeowner might NOT shoot him? I don't think so.