In Chicago, where the number of shootings last year soared, it's often young people who become both perpetrators and victims.

The Cook County Juvenile Justice Center holds about 200 to 300 young residents awaiting trial at the Temporary Detention Center. Among these residents are Leonard and Nigel, both 17 years old.

Because of the rules of the juvenile court, Nigel and Leonard's full names and specifics about their cases can't be disclosed.

The two, along with several other detainees, were part of a summit in the Chicago area where participants shared strategies about how to decrease violence.

Last year in Chicago, there was a huge jump in the number of murders and injuries by gunshot; more than 760 murders and more than 4,000 people injured by gunshot were recorded.

Leonard said the violence isn't always about gangs fighting over drugs or turf.

[For more of this story, written by http://www.npr.org/2017/01/31/...om-teens-behind-bars]