The purpose of the study was to obtain state-police agencies estimates about possible cooperation between far-right extremists and Islamic Jihadists to commit crimes, and the threat posed by specified extremist groups. Towards this goal, a survey was mailed to the 50 state police agencies in the United States. The survey also asked about the types of crimes far-right extremists commit. Forty-two states (84%) responded, with 37 states (74%) submitting completed surveys.
Simone Jr., Joseph, Joshua D. Freilich, and Steven M. Chermak. 2008. "Surveying State Police Agencies about Domestic Terrorism and Far-Right Extremists." College Park, MD: START (February).