Ferguson: 'Looting and burning' as police and protestors clash
Police have clashed with protesters in Missouri, after a grand jury refused to charge a policeman over the death of unarmed black teenager Michael Brown.
Shots were fired, and cars and buildings burned.
Michael Brown, 18, was killed by Darren Wilson in Ferguson on 9 August. His death sparked weeks of demonstrations.
The BBC's Rajini Vaidyanathan reports from a command centre in the town, where the National Guard, police and emergency services are coordinating operations.