Zachary A. Berrios was an 18-year-old resident of Chicago who was shot and killed on July 6, 2012. The homicide occurred on a sidewalk in the Pullman neighborhood, one of several shootings that summer as the city experienced a marked rise in gun-related homicides.

His death was among many young victims that year and highlighted the concentrated impact of violence in neighborhoods facing poverty and limited opportunity. The case underscores the challenges faced by community groups and law enforcement during a period of intensified efforts — including enhanced policing and outreach — to curb the surge in killings.

Does anyone who knew Zachary or who witnessed the shooting have information to share?