Researchers say shootings are preventable. But it requires an investment in mental health resources. After tragedies, schools often add metal detectors and lockdown drills, but criminologists Jillian Peterson and James Densley recommend investing in school-based mental health, crisis intervention, and suicide prevention. “The best thing we can do to prevent violence is not to push kids out, it's to actually pull them in,” says Peterson. #schoolshootings #criminology #violenceprevention