US civil rights groups have begun a long march from where unarmed black teenager Michael Brown was killed, to the house of the Governor of Missouri.

The NAACP has organised the 200km-long protest walk to call for a reform of police practices, a new police chief in Ferguson and a national law to prevent racial profiling by police.

Al Jazeera's Shihab Rattansi reports from St Louis.

Source: Al Jazeera