A demonstrator holds a protest sign at a rally in support of slain teenager Trayvon Martin in New York April 10, 2012. Two attorneys for George Zimmerman, the neighborhood watch volunteer who shot and killed an unarmed black teenager, on February 26, stepped down as his lawyers on Tuesday after saying they had lost contact with him and that he was no longer in Florida. REUTERS/Keith Bedford (UNITED STATES - Tags: CIVIL UNREST)