Trayvon Martin: Public 'outrage' grows after teen death
The US Department of Justice has announced an investigation into the shooting of an unarmed black teenager in Florida.
Trayvon Martin, 17, was shot dead by George Zimmerman, 28, while Martin was walking through a gated community in a suburb of Orlando last month.
Mark Mardell reports from Washington.
21 Mar 2012
- From the section US & Canada