Sybrina Fulton and Tracy Martin, the parents of Trayvon Martin, sit with the Rev. Al Sharpton (left) during a community forum on in the aftermath of his killing by George Zimmerman.

Sybrina Fulton and Tracy Martin, the parents of Trayvon Martin, sit with the Rev. Al Sharpton (left) during a community forum on in the aftermath of his killing by George Zimmerman.