This is not really surprising, is it?
Read this investigative article about how the "stand your ground" law has operated in a place like Florida.
Good luck trying to stand your ground if you're black. It is great luck--please note sarcasm!--for a white man who uses the stand your ground law when he has shot and killed a black man who was unarmed.
Hat Tip to Digby for linking to the article.
If this doesn't show someone once again how racism infects the Zimmerman-Martin incident, then we really have nothing to talk about with such a person.