The parents of slain Florida teen Trayvon Martin, Tracy Martin (L) and Sybrina Fulton, look out at the crowd in tears as they are joined by Trayvon’s older brother Javaris Fulton (R) and their attorney Benjamin Crump (2nd L) towards the end of a rally protesting the shooting of their son in Miami, Florida April 1, 2012. Attorneys for the family of slain black teenager Trayvon Martin are asking the U.S. Justice Department to review reports that prosecutors undermined a police investigation of shooter George Zimmerman by overruling a detective who wanted to charge him. REUTERS/Brian Blanco (UNITED STATES – Tags: CRIME LAW CIVIL UNREST)