SANFORD, Fla. -- It has been called "obscene," "stupid" and the "right-to-commit-murder law."
It has also been credited with protecting people like Sarah McKinley, a young widow who killed a knife-wielding man after he broke into her Oklahoma home.
Opinions about so-called stand your ground legislation -- at the center of the Trayvon Martin killing in Sanford, Fla. -- are as vastly different as the cases in which it has been invoked since Florida in 2005 became the first state to adopt such a statute. But now, even defenders of stand your ground laws say they may need tweaking to clarify the stew of interpretations that critics say are letting people like George Zimmerman, who shot the unarmed 17-year-old, get away with murder.