It all started in the late 1950’s when the Wirtschaftwunder (the magic of the European industrial expansion) took place and the white Euros invited Muslims to do the work so that they themselves could enjoy their long vacations and live high on the hog.
France invited the Algerians, Germany the Turks and Netherlands the Moroccans, etc.
Play with muzzie fire and expect to get burned.
Multiculturalism doesn’t work when you’re dealing with a bizarre and extremist religion like islam.