Chicago Public Schools monitored children's social media for signs of violence and gang membership

In January 2017, after a social media analyst for the Chicago Public Schools reviewed the Facebook profile of a Roosevelt High School student and began to suspect he might be in a gang, a police officer was summoned to the school to conduct an intervention. There wasn't any imminent threat of violence, but the officer and a school district security official met with the student. They asked if he was in a gang.

"That is my business," the student replied, according to a report from the intervention.

https://www.businessinsider.com/chicago-public-schools-monitored-social-media-for-signs-of-violence-2019-2