I have not condoned what has happened,and will never condone what happened,regrettably that's why the saying unintended consequences applies here.
I was listening to german radio via the abc last Saturday night,from memory the males to females ratio of refugees is quite disproportionately high,regrettably I cant remember the numbers ,but they are high.
Without networks setup for those who cant find work,and assimilate socially,there will always be some who do the wrong thing,that's nature.
Germany wanted them,they should have got their ducks in a row, support wise,it aint rocket science.