"In the West, aside from the occasional husband, father or brother who takes justice into his own hands, we leave it up to the legal system to deal with sexual predators."
One of the hallmarks of a civilized (& viable) society is the establishment of a court system. You can't take the law into your own hands -- or your family's. Otherwise everyone will be killing each other, seeking vendettas, etc.
This is exactly what is happening in the Muslim world (especially Arab). The men there are sexually frustrated & caught up in a predatory, abusive cycle of tribalism & machismo. They are obsessed with their honor, & little for the rights of others.
Suicide (rather, homocide) bombing is the natural outcome. It is narcissism in its most malignant form.
Why should they be concerned about the rights of others?
If someone has a dispute they will be happy to have it settled by a Muslim cleric.
I don't doubt that these alleged rapes are real but I would wonder about the motives of who ever is trying to use rape of the Aryan woman as a factor in fomenting hate of the muslims.
I think it is more likely to be simply propaganda by those who are already opposed to muslims gaining political power in Europe and who don't care one whit about Scandinavian women at all.