(CBS News) Thousands joined a march Saturday through the Florida town where 17-year-old Trayvon Martin was shot and killed by a neighborhood watch volunteer, vowing to continue protesting until an arrest is made.

Protesters carried signs, chanted “Justice for Trayvon,” and clutched the hands of their children while they walked from Crooms Academy of Information Technology — the county’s first high school for black students — to the Sanford Police Department. The march was organized by the NAACP was one of several taking place over the weekend.

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