NPR's David Folkenflik talks to Jillian Peterson, co-founder of The Violence Project, about methods to prevent school shootings before they occur, especially when there are warning signs.
NPR's David Folkenflik talks to Jillian Peterson, co-founder of The Violence Project, about methods to prevent school shootings before they occur, especially when there are warning signs.
NPR's David Folkenflik talks to Jillian Peterson, co-founder of The Violence Project, about methods to prevent school shootings before they occur, especially when there are warning signs.