Protesters gather for candle light vigil, protesting over the police shooting of Michael Brown in Ferguson (Reuters photo)
The family of slain black US teen Michael Brown said they were "profoundly disappointed" by a grand jury's decision not to charge the white police officer who killed him, but called for calm.
"We are profoundly disappointed that the killer of our child will not face the consequence of his actions," the Brown family said in a statement. "While we understand that many others share our pain, we ask that you channel your frustration in ways that will make a positive change."