Over the last few years, the world has watched jihadist assassinations on the streets of Amsterdam, civilian slaughter in Madrid and on the London Underground, France's car-and-vanities bonfire, and the global assault on Denmark after one of its newspapers dared to depict the Prophet Muhammad in a derogatory cartoon. For ordinary Europeans who pride ourselves on our multiculturalism and tolerance, the continent seems stranger and sadder. The windows of my apartment in London stare out toward the scene of a recent suicide-murder, and when they are open on a summer morning, the low wailing of a muezzin can be heard clearing the air. On the streets and in the mosques outside, jihadi young men distributing "death to democracy" leaflets subtly clash with young Muslim feminists who want an open, liberal Islam. Kaffiyas and head-scarves contrast with makeup and wonderbras in a bewildering Islamic cacophony.