[Jonty30]

I don’t think it was racially motivated. I think Zimmerman just didn’t practice good sense and proper security measures.

[cynwoody]

I think Zimmerman just didn’t practice good sense and proper security measures.

Alas, Martin was not up to snuff on his situational awareness and self-defense skills. Perhaps, if he had been, he'd be still alive, and the village would be short an idiot, shot by his own gun!

Col. West for VP!

[kabar]

Zimmerman wasn't on neighborhood watch duty. He had just returned from an errand and saw Martin acting suspiciously. He called the police for assistance. He denies that he followed Martin and said he was returning to his truck when Martin attacked him. He killed Martin in self-defense. The physical evidence and witness testimonies seem to support that assertion.

It is easy to say that Zimmerman didn't practice good sense in hindsight, but unless you have some other information the police don't, then it is understandable why the police could not arrest him.