Well, just glancing at the definitions:
Murder (United States law) - Wikipedia, the free encyclopedia
Murder 2 requires the prosecution prove intent to murder. Since there was a violent altercation between Zimmerman and Martin, proving intent is pretty much impossible beyond a reasonable doubt.
Involuntary manslaughter seems the much more feasible charge.
A lot of the argument here seems to be over who was at fault for the violent altercation between Zimmerman and Martin.
Zimmerman - violent, racist, wanna-be cop racially profiling Martin?
Or Martin - violent, drug-using, aggressive thug confronting/assaulting innocent neighborhood watch volunteer for doing his job?
And why does a case like this divide a country/society?
b0und (no winners here)[/
Because it is meant to divide the country. And to distract. While other BS goes on in the White House and else where that matters much more.