Although terrorists use violence to transmit their “political messages,” much can be learned by comparing them to non-violent interest groups. One lesson this comparison teaches is that anti-terrorism policies have their limits, just as do policies that aim to curtail the alleged excesses of peaceful groups.

Defense and Foreign PolicyTerrorism and Homeland Security
Other Independent Review articles by Roger D. Congleton
Summer 2020 Why the Conventional Wisdom about the 2008 Financial Crisis Is Still Wrong: Ten Years Later
Summer 2015 Economists and the State: What Went Wrong
Summer 2001 Democratic Devices and Desires