Jamar Gammage was 26 when he was shot and killed on August 22, 2015, outside the Community Market on the 1100 block of West Atlantic Avenue in Delray Beach, Florida. The shooting followed an altercation reportedly over a woman that involved Gammage and a childhood friend, Dion Graham. Graham, 31 at the time, shot Gammage during the argument, saying he believed Gammage had a gun and was going to shoot his brother.

Dion Graham was arrested and charged with first-degree murder and pleaded not guilty, asserting he acted in self-defense; the case went to trial. The relationship between victim and shooter and the question of perceived threat were central to the proceedings.