Trayvon Martin: Teenage death puts Florida city on edge

The shooting death of an unarmed teenager has tapped into decades of resentment in Florida.

17-year-old Trayvon Martin was killed by a self-appointed town watch patrolman more than three and-a-half weeks ago in Sanford.

When Martin was killed in February, police declined to charge George Zimmerman, who claimed he fired in self-defence.

Paul Adams reports.