From the video's description page: "[This is an] interview with Mark Hamm, Ph.D., Indiana State University[.] Dr. Hamm is studying lone wolf terrorism in the United States and how such terrorists become radicalized. In this interview, Hamm explains the difference between mass violence and terrorism and discusses the ways in which many lone wolf terrorists use public forums to broadcast their intent to commit terrorist acts."
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National Institute of Justice: http://www.nij.gov/