Since the end of the Cold War, SWAT teams have proliferated across the United States and the number of no-knock raids on private citizens has risen dramatically. Abby Hall and Chris Coyne explain that this is the result of the boomerang effect– the process by which, in the absence of strong formal constraints, tactics used in foreign interventions abroad are later used to limit the liberties of people back home. Learn more in their new book, Tyranny Comes Home: The Domestic Fate of U.S. Militarism

More research from Chris Coyne and Abby Hall:

Doing Bad By Doing Good: Why Humanitarian Action Fails (2013)

"Perfecting Tyranny: Foreign Intervention as Experimentation in State Control" (2014)

After War: The Political Economy of Exporting Democracy (2008)

"Why the Disadvantaged Bear the Cost of Police Militarization" (2016)