Mob Of Teens Takes Over Chicago's 'Magnificent Mile' (CBS) — The warmest day of the year so far brings hundreds of mischievous teens to Michigan Avenue. Police are calling it ‘mob action’. CBS 2 is learning about multiple incidents in at least four different locations along the Magnificent Mile and in the Gold Coast, yielding a slew of arrests. Things got pretty bad, very quickly with many innocent shoppers and tourists caught in the middle of a very chaotic situation. Hundreds of teens littered Michigan Avenue and State Street near Chicago. Things started to go bad around 6:00 p.m. Saturday, with teens purposely bumping into people, and causing fights among themselves. Fifteen juveniles and two adults were arrested and charged with Reckless Conduct— a misdemeanor. Community activist, Andrew Holmes witnessed some of the problems, while shopping with his family. “You had a group of teens, close to maybe 500. They assaulted a Chicago police officer that was on a mounted on a horse and all of a sudden they assaulted a citizen walking the streets, just a normal citizen shopping and enjoying the weather,” said Holmes. Later that night, a man was attacked around 10:45 p.m. while walking near Chicago and Dearborn. Sources tell us he was jumped and punched in the face by a group of teens. He was taken to Northwestern Memorial Hospital. In a separate incident, a group of woman say they were attacked by a mob of girls on the CTA Red Line. The women reported a robbery once they got off the train at the State and Monroe station. Eleven females were arrested—10 juveniles and one adult—and charged with battery. Two of the teens were charged with strong- armed robbery. “I caution those parents if their child has been arrested which numerous teenagers have been arrested tonight, that you need to think about your child. Just don’t say the Chicago police picked on your child, when we were watching all the assault going on, especially by teen women,” said Holmes. A total of 28 arrests were made last night surrounding downtown disturbances involving teens. Of those arrests, 25 were juveniles. Charges range from Battery and Strong Armed Robbery to Reckless Conduct. CBS 2 has learned since these charges are misdemeanors, many of those arrested have already been released on I-bonds. Sources tell CBS 2 that much of this activity was planned weeks ago through social media.