Trayvon Martin was shot and killed by a self-styled neighborhood watch leader

Heartbreaking tragedy: 17-year-old Trayvon Martin was visiting a relative's house in a Florida gated community when he walked to the store to get Skittles and iced tea for his little brother. He never made it home. Trayvon Martin was shot and killed by a self-styled neighborhood watch leader, who told police he thought Trayvon was "suspicious" in the mostly-white community.

Unbelievable twist: A man named George Zimmerman allegedly admitted to police that he shot Trayvon Martin in the chest. Zimmerman claims he acted in self defense, even though police allegedly told him not to do anything until they arrived -- and despite the fact that Trayvon was unarmed, carrying only a bag of Skittles when he died. In the two weeks since Zimmerman allegedly killed Trayvon, police have refused to arrest the confessed killer.

Hope for justice: Sybrina Fulton is Trayvon's mother, and she's leading a campaign on Change.org to get justice for her son. Tracy knows that if enough people raise an outcry, Sanford, Florida authorities will be forced to investigate Zimmerman the same way they would investigate any confessed killer.