You won't and that is the point. A population without social cohesion is easily governed.
And having experienced mass migration first hand I can assure you: more immigrants means more disorder, more violence, more cost for social net, less quality of life and lower wages across the board. My experience with migrants is 100% universally bad. And I'm absolutely serious about that.
> more immigrants means more disorder, more violence, more cost for social net,
Strange, you literally just insisted immigration would make Germany easier to govern. Difficult to take you seriously.