Islamization of France
Great section here, it's rather long, but well explained:
Hundreds of thousands of Muslim families, from North Africa, the Middle East and black Africa - whose religion, aspirations and mores are radically different from ours - now live on our soil. Their birth rate is higher than that of European families. What is the consequence? Within 30 years the population of Islamist culture could be in the majority among those 40 years old or younger. "In France, we will have between 6 and 8 million Arabs by the years 2005 - 2010," said Edgar Pisani, honorary president of the Arab World Institute. We have been duly warned: this is a radical transformation (political, economic, cultural and social) of our society.
This mutation is in progress at the very moment when, to use Toynbee's expression, "an external proletariat" is forming on the southern and western shores of the Mediterranean Sea. This army of reservists came about as a result of the birth rate of these peoples, and the absence of an economic policy capable of guaranteeing them a decent life in their homeland. In front of them lie France, Italy, Spain and Germany, lands of mirage, highly developed, with guaranteed employment, free social protection and education. Who could resist the call of this "promised land"?
At the same time, all over the world, roused by immense hopes, Islam is enjoying an unprecedented revival. It is awakening after a long night. It has renewed vigor, pugnacity and ambitions. From Morocco to Indonesia, from the Muslim States of Central Asia to black Africa, more than one billion two hundred million men - young compared to the aging populations of Europe - constitute a "community" (Umma).
It is transnational, motivated by spiritual aspirations, material demands and political ambitions, and (here and there) financed by revenue from oil.