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More violent protests are expected Saturday night in St. Louis as demonstrators erupt over the acquittal of a white officer charged with murdering a black man after a car chase.

Former officer Jason Stockley was acquitted Friday of first-degree murder and armed criminal action charges for the 2011 killing of Anthony Lamar Smith.

Protesters were filmed jumping on and smashing the windshield of a police SUV on Saturday. A group surrounded the old court house guarded by park rangers, one of whom had to be pulled inside the building to avoid a clash.

One teenager threw cement chunks at officers.

On Friday night protesters burned American flags and shattered windows of the mayor's house and several store fronts.

Nine city officers were injured and 32 people were arrested in connection with the riots.

Watch footage of the protests above.

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