"Why? One reason may well be “triple privilege,” as it is called in a 2014 paper that has attracted new interest after the recent mass attacks. Published by Eric Madfis of the University of Washington at Tacoma in the journal “Men and Masculinities,” Madfis concluded that mass killers tend to share elements of white entitlement and heterosexual masculinity pressured by anxieties about middle-class instability and downward economic mobility." https://digitaledition.chicagotribune.com/tribune/article_popover.aspx?guid=62ba50e8-ae08-4ab6-bdf1-e4e46b6e9b1b