People demonstrate across the street from the Ferguson Police Department, Thursday, March 12, 2015, in Ferguson, Mo. Two police officers were shot early Thursday morning in front of the Ferguson Police Department during a protest following the resignation of the city's police chief in the wake of a U.S. Justice Department report.

Protest organizers say more work lies ahead in Ferguson

And they insist they still have unfinished business, with many planning to stay in the streets until the mayor of the St. Louis suburb is fo…