At the Weekly Standard, Christopher Caldwell has a piece on Holland’s reexamination of their treasured multicultural ideals, now threatened by long-festering Islamic radicalism: Holland Daze.

The murder of one Dutch filmmaker 911 days after the assassination of Fortuyn is described by people in Holland as having had the same effect on their country as the attacks that killed nearly 3,000 in the World Trade Center towers. Dutch people have the sense that, for the first time in centuries, the thread that connects them to the world of Geert Mak’s father, and that world to the world of Erasmus and Spinoza and Rembrandt and William the Silent, is in danger of being snipped. Part of it is the size and the speed of the recent non-European immigration. The Netherlands, with a population of 16 million, has about 2 million foreign-born. By some estimates, a quarter of them do not speak Dutch.

What’s more, the public has been told for two decades now that they ain’t seen nothing yet, that this is only the first wave of a long era of immigration, which they’d better learn to love. The immigrants the country now hosts have been difficult to manage. Part of the problem is the interaction of high immigration and what was for years a generous, no-questions-asked welfare state: As many as 60 percent of Moroccans and Turks above the age of 40—obviously first-generation immigrants—are unemployed, in the only major economy in Europe that has consistently had unemployment at or below American rates.

Most of these immigrants are Muslims. Muslim immigrants had begun to scare people long before Pim Fortuyn, the charismatic populist, turned himself into the country’s most popular politician in the space of a few weeks in 2002, by arguing that the country was already overloaded with newcomers. (Fortuyn was assassinated by an animal-rights activist in May of that year.) Already in the 1990s, there were reports of American-style shootouts in schools, one involving two Turkish students in the town of Veghel. This past October, newspaper readers were riveted by the running saga of a quiet married couple who had been hounded out of the previously livable Amsterdam neighborhood of Diamantbuurt by gangs of Muslim youths. There were incidents of wild rejoicing across Holland in the wake of the September 11 attacks, notably in the eastern city of Ede. The weekly magazine Contrast took a poll showing that just under half the Muslims in the Netherlands were in “complete sympathy” with the September 11 attacks. At least some wish to turn to terrorism. In the wake of the van Gogh murder, Pakistani, Kurdish, and Moroccan terrorist cells were discovered. The Hague-based “Capital Network,” out of which van Gogh’s killer Mohammed Bouyeri came, had contact with terrorists who carried out bombings in Casablanca in 2003. Perhaps the most alarming revelation was that an Islamist mole was working as a translator in the AIVD, the national investigative service, and tipping off local radicals to impending operations.

The question naturally arises: If immigrants behave this way now, what will happen when they are far more numerous, as all authorities have long promised they will be?