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As the Troy Davis execution made such a huge impact on Twitter, will social media change the way people view the death penalty?
A final clemency appeal for Troy Davis, convicted of the 1989 murder of an off-duty policeman, is rejected by the pardons board in the US state of Georgia.
Troy Davis is executed in Georgia for shooting a policeman in 1989, after a final appeal was rejected by the US Supreme Court.
Investigative journalist Graham Johnson, co-author of Darkness Descending: The Murder of Meredith Kercher, outlines 10 factors that helped Amanda Knox and Raffaele Sollecito win their appeal.
Amanda Knox is being freed from an Italian prison after her murder conviction was overturned. So what now for the 24-year-old?
Rhonda Cook, a reporter from Georgia, USA, talks about Troy Davis' final words, the protests, the press coverage and his execution.
The search will go on to find out what really happened on the night UK student Meredith Kercher was murdered four years ago in Italy, her family says.