Chicago Police Superintendent Eddie Johnson on fighting violence with the approach of Summer

Eddie T. Johnson, Superintendent of the Chicago Police Department, appears at the City Club of Chicago, May 31, 2016 (City Club of Chicago)

Chicago Police Superintendent Eddie Johnson addresses Illinois issues like the carjacking task force, and gun control laws with Pete McMurray, who asks how the man who killed four at a Nashville waffle house got his weapons back after they were revoked.