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CHICAGO, IL - FEBRUARY 02: Friends, fellow students, and others hold a candlelight vigil at Harsh Park in memory of Hadiya Pendleton on February 2, 2013 in Chicago, Illinois. Pendleton, a fifteen-year-old high school honor student, was shot and killed while hanging out with friends on a rainy afternoon under a shelter in the park on January 29. A $40,000 reward has been raised to help find her killer. Pendleton was the 44th homicide recorded in Chicago for 2013. (Photo by Scott Olson/Getty Images)

CHICAGO, IL - FEBRUARY 02:  Friends, fellow students, and others hold a candlelight vigil at Harsh Park in memory of Hadiya Pendleton on February 2, 2013 in Chicago, Illinois.  Pendleton, a fifteen-year-old high school honor student, was shot and killed while hanging out with friends on a rainy afternoon under a shelter in the park on January 29.  A $40,000 reward has been raised to help find her killer. Pendleton was the 44th homicide recorded in Chicago for 2013.  (Photo by Scott Olson/Getty Images)