As Chicago police continue to investigate the murder of a teenage boy who was shot and killed while sitting on a North Side park bench, members of the city's faith community convened Saturday, calling for an end to gun violence and specifically crimes against children. In the recent incident, a teenage boy identified as Lavel Window, 13, was found with a gunshot wound to the head at approximately 9:50 p.m. at Lerner Park in the 7500 block of North Sacramento Avenue, according