Adenaur brought in Turks because of the post-war labor shortage, and that got the ball rolling. . . Hitler’s revenge.
De-Christianize Europe and bring in Mohammedans.
What could happen?
Yes, after the Kennedy administration had asked Adenauer to do so, in order to stabilize Turkey, the Southeastern outpost of Nato.
Tbh, nobody at that time could have predicted what a serpent the West would be nourishing at its breast. There had been no real experience with large amounts of Muslims living in Western countries.
And I must admit, I am almost grateful now for those Islamists for showing their true colors. Now everybody knows whom we are dealing with…
When I served in Germany in the early 80s, they warned us to stay out of Turkish areas. They said the Turks would cut us 3 ways - long, deep and often.