I just finished reading a marvelous collection of essays by Theodore Dalrymple, "Our Culture, What's Left of It: The Mandarins and the Masses". It includes an essay, "Barbarians at the Gates of Paris" in which he describes how the French built these massive housing projects for foreign workers beginning in the sixties, called cites. They've basically evolved into mini Falujas, ringing the city. Gangs involved in theft and drug-dealing are in possession of sophisticated weaponry obtained from rogue states. Once Chirac visited one of the cites, "Les Musiciens", during an election campaign, and was greeted with Molotov cocktails!
Yes, this "unassimilated" nonsense was one of the worst things the French ( and many others countries ) could have done.
The Barbarians are, indeed, inside the Gates.
Islam = Religion of Peace
The dead are very peaceful.
Therefore: Religion of Peace = Religion of Death