The problem is what can be done with large populations of muslim men.
I read the other day Germany had about 8 million males between 18 to 35, it now has another million recent arrivals from the middle east.
So taking into account existing migrants, at least 1 in 8 males in Germany, of fighting age are muslims. Mostly poorly educated, misogynistic, brutalised men.
There is also 1 million fewer women than men in this age group, and very few women in Germany will want to go near them after Cologne etc.
Sounds to me like a dangerious cocktail.