Chicago gun violence is ‘clear failure’ of criminal justice

Nykea Aldridge was walking her baby in a park on Chicago's South Side when she was killed in crossfire. The tragedy has sparked a conversation about rising gun violence in the city, where homicides exceed those in New York and Los Angeles combined. John Yang speaks with Chicago Life's Rev. Jedidiah Brown and Lori Lightfoot, president of the Chicago Police Board, for more on the crisis.