First of all, my condolences to the family and friends of Trayvon Martin for the horrible loss they have endured.
There have been many beautiful and touching diaries about this young man that lost his life too young and it is pretty clear to the majority of us in this community that the shooting (or at the very least least the chasing of Trayvon Martin) was racially motivated and that racially motivated policemen came to the quick conclusion that Zimmerman was exercising his right to self defense - essentially they indicted, prosecuted and judged a dead boy, without ever giving him any benefit of innocence until proven guilty.
There is an issue that almost everyone seems to want to avoid, the fact that gun control laws, more specifically that the lack of these is a direct cause for what happened to Trayvon Martin. Florida gun laws have gotten more lax, the shooter had easy access and could carry a concealed weapon in spite of having had violence in his past that should have disqualified him, but was expunged. To make things worse, the NRA has gotten, not just Florida, but also 19 other states to institute the "stand your ground" laws - better described by others as the "Make my day" laws.