Katherine Newman would be useful in helping people understand the mindset of shooters, how the warning signs go unnoticed, etc.
Newman is a sociologist at Johns Hopkins and is dean of the Krieger School of Arts and Sciences. She is a co-author of Rampage: The Social Roots of School Shootings (Basic Books, February 2004). Based on her research, Newman can also discuss personality profiles that are common among mass shooters.
Contact Amy Lunday for details at firstname.lastname@example.org.