The fact is that we don't know enough to judge. I have a bit of experience in this area. I only have the news reports to form an opinion, and they aren't enough for a final judgement. My take so far:
1. Zimmerman was the head of the local neighborhood watch, and in my opinion, he took his job too seriously. His job was to watch, not to intervene. He should have stayed in his car.
2. Martin fit the description of a known burglar and home invader in that area. Not his fault, but when you dress like a banger, you'll be treated like a banger.
3. The physical evidence released so far indicates that Martin and Zimmerman had a physical altercation, that Martin broke Zimmerman's nose and knocked him to the ground, and that Zimmerman shot Martin at extremely close range.
4. The "Stand Your Ground" law is irrelevant in this case.
This incident has been totally blown out of proportion by the media and by pundits on both sides of the issue. It will be next to impossible for Zimmerman to get a fair trial, and the threats of violence by the New Black Panthers do nothing but inflame the issue further.
Everyone needs to step back, take a deep breath, and let the criminal justice system work.
Just my $0.02.