How America's Perpetual Warfare Abroad Is Fueling an Increase in White Supremacist Violence in U.S.

America's perpetual warfare abroad has led to an increase in white supremacist violence at home. That's one of the key findings in Frontline PBS and ProPublica reporter A.C. Thompson's new investigation, "Documenting Hate: New American Nazis," which premieres Tuesday evening on PBS. The documentary reveals the deep ties between the military and white supremacy, as Thompson examines the Pittsburgh shooting and the rise of violent hate groups such as Atomwaffen. Thompson interviews historian Kathleen Belew, who says there has always been a correlation in the U.S. between the aftermath of war and the rise of white supremacist violence. "If you look for instance at the surges in Ku Klux Klan membership, they align more consistently with the return of veterans from combat and the aftermath of war than they do with anti-immigration, populism, economic hardship or any of the other factors that historians have typically used to explain them," she notes. We speak with A.C. Thompson in Boston. His investigation premieres Tuesday on PBS stations and online.