Ferguson - The father of an unarmed 18-year-old who was fatally shot by a police officer in Missouri has made a plea for peace, regardless of whether a grand jury decides to charge the police officer for his role in the killing.
Demonstrators gathered at Ferguson police headquarters on Thursday night. St Louis County Police spokesperson Brian Schellman says police told the crowd to disperse when protesters blocked traffic, and those who refused were arrested.
Three people face charges after the protests.
Michael Brown Sr posted a video online saying that he, his family and the St Louis region are still hurting from the death of Michael Brown. But, Brown says, "hurting others or destroying property is not the answer".
Michael Brown was killed by Ferguson Police Officer Darren Wilson following an altercation on 9 August.
A grand jury is supposed to announce its decision soon on whether Wilson should be indicted on a range of charges.
The case has spurred sometime violent protests while reigniting a fiery debate in the United States over race relations between police departments and the minority neighbourhoods they are supposed to serve.
The video was a public service announcement produced by the group STL Forward, a website trying to unite the St. Louis region following the unrest that has followed the shooting.