I believe thursday's bombings in London, combined with the first wave of explosions two weeks ago, are changing something for the better. Never before have I heard Muslims so sincerely denounce terrorism committed in our name as I did on my visit to Britain a few days ago. We're finally waking up. Except on one front: the possible role of religion itself in these crimes. Even now, the Muslim Council of Britain adamantly insists that Islam has nothing to do with the London attacks. It cites other motives — "segregation" and "alienation," for instance. Although I don't deny that living...