Muslim Migration and Rape Statistics in Europe
European countries with ancient Muslim populations don't appear to have large sexual assault rates. It's the countries that admitted large numbers of Muslim migrants in a matter of decades that are suffering.
Islamic doctrines and Arabic cultural mores that permit, explicitly or implicitly, the sexual assault of non-Muslim women who are not dressed properly or walk unaccompanied by a male relative, are pernicious. And Muslims rapists in Europe and Australia have cited belief and culture in their defense. But mass migration is often inherently disruptive, breaking down values and trust in stable communities.