"No probable cause exists" to file any indictments against police Officer Darren Wilson, St. Louis County prosecuting attorney Robert McCulloch said Monday night.
Police say a black 18-year-old had a gun when he was shot at a gas station in a St. Louis suburb that's just two miles west of Ferguson. Police have released a video of the incident.
Educators in St. Louis are using events in Ferguson to spark discussions about race and class in a deeply segregated region. Others have found approaching the subject a difficult task.
The latest unrest comes after an off-duty police officer killed 18-year-old Vonderrit D. Myers, who authorities say fired three times in the encounter.
The St. Louis police chief says the man fired at the 32-year-old officer, who is white, during a chase and that a weapon had been recovered from the scene.