Extremism
Real and imagined extremist threats in Mexico and along the U.S.-Mexico border: 'Colombianization' as an antidote to leftist and criminal extremist networks
Taming uncivil societies: violent rightist extremism, police responses, and preventive public policy in East Germany
U.S. Border Patrol critical issues in policing: 21st century challenges in the National Border Patrol Strategy
USA: hate groups, radical-right violence, on the rise