Esther Haywood, left, and Richard McDuffie hold hands as they gather with others for a prayer service Saturday, Nov. 29, 2014, in St. Louis, before starting off on a 120-mile march to the governor’s mansion in Jefferson City. After the service the group traveled by bus to the Canfield Drive in Ferguson where Michael Brown was killed to start the march which will take seven days. (AP Photo/Jeff Roberson)

FERGUSON, Mo. (AP) — Demonstrators are marching from Ferguson to the Missouri governor’s mansion in Jefferson City to protest the grand jury decision not to indict Officer Darren Wilson in the shooting death of 18-year-old Michael Brown.

Several people gathered in Ferguson on Saturday at the site where Brown was killed. The 120-mile march to Jefferson City will take seven days and was organized by the NAACP.

Organizers say the purpose is to call for new leadership in the Ferguson police department and for police reforms in the St. Louis suburb and throughout the U.S.

Each evening along the route, marchers will participate in what they call “teach-ins” and rallies. Organizers say people are welcome to join in as they please.