Anyway, Someone in the Political thread asked why this had become such a big deal and as someone who lives in Florida (Tampa Bay area), I'll try and add what information I can about the background issues going on in Florida at the time, which seemed to push this issue bigger than it might have been.
Stand Your Ground
Even before all this happened, there had been issues over the SYG law in the news. There had been some shootings where people had claimed SYG which seemed the stretch or bend the law a bit, which had people already on edge over it being used so widely. Most notably an older man had gone to a neighboring playground to yell at some kids about skateboarding and was confronted by a younger man who was there with his daughter, words were exchanged, things escalated and the older man shot and killed the younger man; then went on to claim self defense ( Many people were angry that he had instigated the argument then went for the gun soon as things didn't go his way, rather than try to diffuse the situation). I'm not sure if it happened before or after the Trayvon shooting, but one of the major Florida papers had done a study where they showed that the SYG law was used for all sorts of questionable defenses, even including drug dealers shooting their buyers after things went down and then claimed SYG.
Trayvon Shooting
I don't live in the Orlando area where it happened, so I can't say I have all the details, but the way things played out as news of the shooting came out didn't help matters at all. Initial reports (which i was not able to verify so take it with a grain of salt) portrayed police showing up, doing a cursory report and letting Zimmerman go on his merry way. Then (and again, things moved so fast I'm not sure it was ever verified) it was reported that the family was not even notified of his death until 1 or 2 days later when they called to report him missing and were then informed of his death. Which led many to question just how much the police investigated and whether they realized after the fact that they had badly fucked up and were trying to CYA when the family found out what happened.
So now you have a story forming of police fucking up yet another investigation, a young man shot for questionable reasons, the 911 quotes which brought the spectre of racial profiling into things. Then naturally, people jumped on Zimmerman would clearly claim SYG and self defense and things just spiraled out of control.
Honestly, neither Trayvon nor Zimmerman were innocent in this and unfortunately, while many people simply want the truth, there is no way we will ever get that from this trial. The defense wants him acquitted, the prosecution wants him convicted, the truth falls way behind either of those things.