Northwestern University Director of the Institute for Public Health Dr. Lori Post: A mental health issue versus a personality disorder

President Donald Trump speaks about the mass shootings in El Paso, Texas and Dayton, Ohio, in the Diplomatic Reception Room of the White House, Monday, Aug. 5, 2019, in Washington. (AP Photo/Evan Vucci)

Director of the Buehler Center for Health Policy and Economics at Northwestern University Feinberg School of Medicine, Dr. Lori Post, joins Jon Hansen to explain why mental illness isn’t the primary cause for a mass shooting. Dr. Post specifies one key variable: the process with which a shooting is undertaken.

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