A CeaseFire meeting in southwest Chicago. The program stages group interventions in risky neighborhoods and works with gang members to help decrease shootings and killings. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

Students participate in a team-building activity. These 13- and 14-year-olds are vulnerable to gangs and have already been exposed to violence. Fifteen students who attend Chicago Public Schools have died by gunfire this school year. David Gilkey/NPR hide caption

itoggle caption David Gilkey/NPR

Marcus Spies was shot while taking out the garbage. He lives in Roseland, a tough south side neighborhood where gang fights claim lives and wound many. Spies says that one of the gangs wanted him to join up, but he declined. He believes they shot him in retaliation. David Gilkey/NPR hide caption

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Mayoral candidate Rahm Emanuel leaves Chicago's Home of Chicken and Waffles restaurant following a campaign stop and lunch Monday. He is the front-runner among the six candidates. Scott Olson/Getty Images hide caption

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Mayoral candidates (from left) Rahm Emanuel, Miguel del Valle and Gery Chico wait for the start of Monday's debate at the WTTW television studios in Chicago. The fourth candidate, Carol Moseley Braun, arrived later. Charles Cherney/AP hide caption

itoggle caption Charles Cherney/AP