Trayvon Martin case: Protesters march in Sanford

SANFORD, Fla. (AP) — Protesters and civil rights leaders are vowing to continue marching until there is an arrest in the case of 17-year-old Trayvon Martin.

Thousands of people gathered Saturday outside the Sanford Police Department in the Florida town where Martin was shot to death by neighborhood watch volunteer George Zimmerman.

The Rev. Al Sharpton told protesters they are living in the middle of "an American paradox," where a black man can be placed in the White House but a black child cannot walk through a gated neighborhood.

The case has inflamed racial tensions and sparked protests nationwide calling for Zimmerman's arrest. Zimmerman has said he acted in self-defense when he shot the teen.