Primary Outlet: Free to Choose MediaBroadcast Date: Tuesday, March 27, 2018 - 12:10pmBroadcast Type: interviewBroadcast Format: online videoScholar: Norberg, JohanSubjects: the frequency of school shootingsResearch Area: Government and PoliticsLink: https://www.cato.org/multimedia/media-highlights-tv/johan-norberg-discusses-freq…