Editor’s note: This is the third in an occasional series of opinion essays, produced in cooperation with the University of Chicago Crime Lab, exploring solutions to the scourge of gun violence in Chicago. The Crime Lab released a report this month about the historic surge in There is much to learn from the Crime Lab’s report. For example, many people likely do not know that almost 20 percent of Chicago’s homicide victims are children and teens; that almost half of gun violence victims are not affiliated with a gang; and just 6 percent of shootings last year resulted in arrest.