Four police officers have been seriously injured during a student protest today, December 3 in downtown Denver.

A large group of Denver high school students walked out of class this morning (Wednesday) to protest the St. Louis Grand Jury's decision not to indict former police officer Darren Wilson after he shot and killed Michael Brown, an unarmed teenager, last August.

The East High School student protesters blocked traffic as they marched along the 16th Street Mall to the capitol building and downtown, chanting, "Hands Up, Don't Shoot."

Amid the chaos of the protest, four Denver police officers working crowd control on bicycles were seriously injured. All have been transported to the hospital. One of the officers is in critical condition. Ambulances, fire trucks and other police vehicles are on the scene now. Check out 9News for updates and more information.

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