France annexed Algeria some time back. Gave them citizenship rights because that was a super clever idea and everyone everywhere is exactly the same, right? Worked out well.

Now they have lots of Algerians who are totally integrated into French society. What could have gone wrong? BTW in France they have no problem with a desire to do policing; they've had borderline soldiers standing around tourist areas with automatic rifles for years. They just have a massive population of savages, some of which have their own illigally obtained weapons of various descriptions.