I've both read and heard on talk radio that there is a widespread belief amongst Hindus in India that one of the ways Muslims plan to take over is to simply to outbreed everyone else. Ironically enough, I think (and I may be wrong) that on average the Muslim population of India is also the poorest. Here in America, Daniel Pipes mentioned in a column that an astounding 23% of Muslims (immigrants?) collect from a major government program. I daresay that it is difficult for Mustafa to support a wife and ten kids on a convenience store clerk's salary alone, so he avails himself of infidel taxpayer-supplied government freebies.
A quote from the link to Douce France in #26, it's right in line with your comment from Daniel Pipes:
"Imam Bouziane, the one they keep trying to deport, had 16 children by two wives, all living on the French state: a representative Muslim man."
That and the many Muslim charities that havent yet been tagged as terror fronts..