Ferguson protests continue over killing of teenager

Angry protests continue in the US city of Ferguson in Missouri despite a curfew being put in place. It follows the shooting death of an unarmed black teenager by police a week ago. It was hoped the curfew would help calm the situation. However, the violence has continued with protesters throwing bottles and molotov cocktails to the police forces, who retaliated with tras gas. Al Jazeera's Natasha Ghoneim reports from Ferguson.