SANFORD, Fla. (AP) - The parents of an unarmed black teenager who was shot dead by a neighborhood watch captain in Florida will be part of a rally in the city where he was killed to protest the lack of an arrest or prosecution.

Professional athletes will join the rally in Sanford, near Orlando, that comes before a city council meeting. It's the first time the council has met since the city's police chief stepped down in what he called a temporary move.

A rally will be held at the University of Florida at 1:30pm.

There have been rallies around the country as anger has spread over the shooting a month ago Monday. Seventeen-year-old Trayvon Martin died after neighborhood watch captain George Zimmerman reported him to police as suspicious and then followed him.

Zimmerman told police he shot in self-defense and hasn't been arrested or charged.