Despite the efforts of many people to expose the problems of Troy Davis' innocence, Georgia executed Troy on September 21, 2011.
Read MoreJohn was just 18 years old when he was arrested for, and ultimately convicted of a murder he did not commit.
On the morning of September 9, 1993, Landu Mvuemba and DeAnthony Williams walked together to visit the scene of a gang-related shooting committed the night before near 17th Street and Rimpau Boulevard. Without warning, Mvuemba heard the sound of gunfire. He ran for cover but was shot.