Police used smoke and tear gas to enforce a curfew on protesters early yesterday morning in Ferguson, Missouri, where an unarmed black teenager was killed by police last week.

Seven people were arrested during the night in the St Louis suburb. Campaign group More claimed that all seven were arrested after being “dragged out of cars, some parked in their own driveways.”

Police swarmed the mainly black area in armoured vehicles shortly after the curfew started, claiming they were responding to reports of a break-in rather than seeking to enforce the dispersal order.