> Most of the Islamist incidents are thwarted plots, indicating a significant investment of law enforcement resources. Most of the others are successful acts in

> Most of the Islamist incidents are thwarted plots, indicating a significant investment of law enforcement resources. Most of the others are successful acts in which attackers damaged property or inflicted human casualties. Seems to say that surveillance does work, but that we're perhaps surveilling the wrong people/in the wrong proportions. It could be consequence of homegrown terrorism being, errr, homegrown, which therefore entails the much more legally tricky surveillance of American citizens. Islamic terrorism tends to be funded/trained/orchestrated abroad, where collaborators don't enjoy the same freedoms from surveillance.