Sybrina Fulton (c) the Mother of Trayvon Martin Looks out at the Crowd Before Taking to the Podium to Address Attendees During a Rally Attended by Rev Al Sharpton (l) For Her Slain Son at Fort Mellon Park in Sanford Florida Usa 22 March 2012 the Sanford Police Department's Decision to not Arrest the Man Accused of Killing 17 Year-oldtrayvon Martin in February Has Created a Public Outcry For Justice From Many Citizens and Civil Right's Groups Police Say Martin was Unarmed when He was Shot by Neighborhood Watch Captain George Zimmerman who Claims to Have Shot the Teen in Self Defense United States Sanford