Students from 15 schools across Miami have walked out of their classes and converged in an American football stadium to protest against the murder of 17-year-old Trayvon Martin.
Trayvon Martin was shot dead by 28-year-old George Zimmerman, a neighbourhood watch volunteer who said he suspected Martin of mischief.
Trayon was unarmed: carrying a bag of sweets and a can of iced tea when he was killed.
The case of the shooting of unarmed black teenager Trayvon Martin may have shocked America, but it is not an isolated incident.
President Obama has said the killing of an unarmed black teenager by a neighbourhood watch officer is a 'tragedy.'
The parents of Trayvon Martin are demanding justice after the unarmed teenager was shot dead in Florida by a neighbourhood watch guard.