It seems there is a contradiction sliding into much of Hitch's writing about Islam, one that seems anecdotally to be shared. Hitch can not make up his mind -- are the Muslims evil hordes of "rage boys" who will overwhelm our defenses? Or are they paltry crowds of pathetic agitators who are overcovered by "the media" and who don't speak for their nations? It would seem kind of hard to have it both ways, yet many people try very hard. On one hand we are alarmed with talk of a "clash of civilizations", and then the same people turn around and claim that these 'rage boys' are little more than media-savvy soccer hooligans.
This bifurcation is hardly new. I once suggested that its modern manifestation grew out of the evangelical influence on the Republican Party. Listen to a typical TV preacher. One minute he will be warning you that Satan is a powerful figure who is destroying society and will snatch your soul. The next, he will mock Satan as more of a fool than a threat -and easy mark for the "Godly" armies of the believers. Quite a contradiction, the enemy is both A)powerful and dangerous and B)weak and discredited. The preachers try to have their cake and eat it too. You are in danger, and must team up with me! But then you'll be easily saved!
I would suggest that "rage boys" have existed in one form or another for ages. They are not usually "representatives" of their societies, but rather bellweathers. They are the violent/activist tip of larger, but more mundane, bodies of political thought and action. As an example, I would suggest looking at the "Busing riots" that convulsed many U.S. cities in the 1970s. The men with pipes and stones were a violent vanguard of a more-widely felt viewpoint that nonetheless didn't engage in rioting (and had "day jobs" to go to, etc.) Politicians had to be very careful about how they talked about his violent minority, however, because they understood that there was a much larger minority (or even majority) who might not be rioting, but who nonetheless sympathized with the ostensible goals of those who so publicly displayed their rage.
This is not new. For every abortion protestor who was arrested for chaining him/herself to a clinic door, there were oodles more who were content to write modest checks from the safety of their homes. "Hippy" anti-nuclear chanting is a fringe activity, to be certain, but the NIMBY effect that swells beneath it is a force well understood by politicians. One might be tempted to simply ignore the "sturm und drang" of the 'rage boys', but after them, the deluge.