Here's my take on the Zimmerman/Martin thing.

Zimmerman is a well intentioned law enforcement wannabe civilian who
overstepped the boundaries of the recommended procedures established
in the "Neighborhood Crime Watch" organizational structure,
established in concert with the local police department. What he
did was not illegal, but was contrary to recommended procedure
recommended by the Neighborhood Crime Watch representative from the
police department. (She is also a civilian and not a cop).

Really doesn't matter when he left his car or if he "followed" Martin.
Both actions are not illegal.

When he confronted Martin, some words were exchanged. Martin then
clobbered Zimmerman with a haymaker to the nose.

Zimmerman fell to the ground, Martin jumped on top of him and either
threw some more punches and/or started smacking Zimmerman's head on
the concrete.

Zimmerman tried to resist and started screaming for help.

The beating continued. Zimmerman found his gun and shot
Martin.

Martin fell backwards and then onto the ground.

That's it.

The rest of the bull**** being promoted in the media with regard to
race issues, hate crime, etc., is nothing but that ..... pure
bull****.