Last night in a press conference, Florida state special prosecutor Angela Corey announced the charges filed against George Zimmerman for the shooting death of Trayvon Martin on February 26.  Zimmerman was arrested yesterday on charges of second degree murder. Adam Kealoha Causey, a reporter with the Florida Times Union, attended last night's press conference. Dale Carson is a lawyer and retired legal instructor for the FBI, and joins us to discuss the legal explanation behind Zimmerman's arrest.