Several hundred teenagers are rioting in downtown Chicago and police officers are describing the scene as “complete anarchy.”

At least three people have been shot and a number of transit workers have been attacked and beaten by the mob. Video shows young thugs mounting cars and buses – terrorizing motorists.

At least one news crew was forced to take cover to avoid being shot and Northwestern University has been placed on lockdown to protect students. There are also reports that teens are trying to force their way into the Art Institute of Chicago.

“It’s heartbreaking, kids fighting, chasing each other, some of them got guns,” an eyewitness told NBC News. “It’s really heartbreaking when one of them actually gets hurt, and that’s unfortunate, happened last night.”

“It was a lot of cops here, but they were still outnumbered,” the witness added. “There were so many teenagers that showed up, and they tried to keep the peace and keep them under control.”