Protestors march side-by-side with police in Ferguson

Protesters marched peacefully as calm prevailed for a fourth day in the US suburb where an unarmed black 18-year-old was shot by a white policeman, sparking more than a week of unrest.

Several community activists walked side-by-side with police officers in uniform down one of the main streets in Ferguson, Missouri, that had been filled with armoured vehicles and officers in riot gear less than a week ago.