“Columbine catalyzed a seismic shift in how schools, communities, and law enforcement respond to the threat of mass shootings. It spurred a multi-billion-dollar school security industry and instilled a generation with the protocol to ‘run, hide, fight.’ But our fortification of schools, unproven surveillance technologies, and ‘good guys with guns’ have not stopped school shootings nor even slowed them down.” [The Denver Post]