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CHICAGO –A protest march was held in Chicago’s shopping district, with the Rev. Jesse Jackson in the middle of a crowd that’s shouting, “What do we want? Justice. When do we want it? Now!”

Several hundred demonstrators  gathered in the drizzling rain, many with umbrellas and plastic-wrapped signs.

Crowds chanted “16” for the number of bullets that the police officer fired at McDonald. They also chanted “13” for the number of months it took to bring charges against officer Jason Van Dyke.

Traffic was shut down on Michigan Avenue between Wacker Drive and Water Tower Place.

While demonstrators marched, shoppers watched or continued with their day.

The protests were peaceful, with activists calling for the resignations of Police Superintendent Garry McCarthy, and Cook County State’s Attorney, Anita Alvarez.

Organizers also want Mayor Rahm Emanuel to take responsibility for how long it took to bring charges against the officer, and release the video tape of the shooting.