vijayjohn wrote:What's "anomie"?
It's a key concept in sociology which is honestly kind of hard to explain, but can be loosely defined as "alienation". It literally means "normlessness" and refers to the confusion and uncertainty that results from a lack of direction in life eg. from rapid changes in the social order.
social instability resulting from a breakdown of standards and values; also : personal unrest, alienation, and anxiety that comes from a lack of purpose or ideals
It has been proposed as an explanation for all kinds of social phenomena such as suicide, crime, deviance, and so on. Basically, being left out of mainstream society can lead to bitterness, resentment and anger, so it's not hard to draw a connection between massive unemployment and poverty in Muslim countries and the number of young men who blame the West for all their problems and see radical Islam as an answer.
Radical Islam provides a community for disaffected men to belong to* and a sense of purpose. And once they get deep enough into it, they're willing to kill to achieve the group's objectives, much like a cult. These are just hypotheses, but I think this is a more in-depth analysis of the causes of terrorism than "Islam".
*This is also a common sociological explanation for why young men in poor communities often join gangs.