Many articles I read about Jihadists refer to "disaffected youth," even this one about the Algerian beheading of the French hiker.
I am sorry to say that these are not "disaffected youth" (as if they were Holden Caulfields or Benjamin Braddocks), they are deeply "affected" people from all walks of life who do not mind dying for their beliefs. They are true believers, Muslim fundies following their scripture and their religious leaders. Any efforts to psychologize them are amateurish, naive, ignorant, and Western cultural-centric.
Multicultural dogma says that we must comprehend people in the context of their cultures, not in the context of our materialist, secular, and therapeutic culture.