For nearly 30 years, Javier Aceves worked as a pediatrician in Albuquerque, New Mexico, focusing primarily on disadvantaged families. His approach was holistic: along with treating children, he did outreach with teens, and helped children’s parents with everything from addiction to learning how to be a supportive caregiver. For all the programs he helped develop, the patterns he kept seeing haunted him. He could treat young kids’ medical problems, but as they grew up, “we’d lose them to violence,” he says. Kids died all the time, by homicide or suicide.