A white man who is seen on security video fatally shooting an unarmed black man during an argument over a Clearwater convenience store parking space at faces a manslaughter charge. Michael Drejka claims he has immunity under Florida's "stand your ground" law. Nancy Grace looks at the case with Benjamin Crump, the Florida civil rights attorney who represents the parents of Trayvon Martin -- the teen killed by George Zimmerman in another infamous "stand your ground" case.  Also joining the discussion are forensic psychiatrist Dr. Daniel Bober, Atlanta prosecutor Kenya Johnson, veteran detective Steven Lampley, defense lawyer Robin Ficker, and reporter Chuck Roberts.