'Unlawful assembly' warning to US protesters
Media playback is unsupported on your device
Video

St Louis police killing: 'Unlawful assembly' warning to protesters

Demonstrations have taken place again in St Louis, after a white former policeman was found not guilty of murdering a black man in 2011.

Jason Stockley, 36, was cleared on Friday of murdering Anthony Lamar Smith, 24.

Scuffles broke out on Friday and again on Saturday evening, when police were out in force.

Go to next video: Police fire tear gas in Missouri