Police arrest 23 as state of emergency declared in Ferguson

Police have arrested nearly two dozen people in Ferguson, Missouri, during a fourth consecutive night of demonstrations marking the anniversary of the fatal shooting of teenager Michael Brown.

The gathering that stretched into the early morning came a day after a protest that was interrupted by gunfire and a police shooting that left an 18-year-old critically injured. The violence set the St Louis suburb on edge and had protest leaders worried about whether tensions would escalate.