Tags: Police

Thousands of people marched peacefully through downtown Baltimore on Saturday to protest the unexplained death of a black man in police custody but pockets of violence erupted when a small group smashed windows and threw bottles at officers.

An investigation into the death of a black man in Baltimore police custody is still trying to figure out what happened, the police commissioner said on Friday as the city braced for a major protest over the incident.

Two police officers were shot during a protest outside Ferguson, Missouri police headquarters early on Thursday, police said, just hours after the city's police chief quit following a damning U.S. Justice Department report into his force.