...but you can no more hold all muslims to task
Actually, we can, and should. It's part of their "culture" that sharia has created and which they do not deny, that allows these kind of attitudes and behavior to exist. If they wish to behave as heathen neanderthals in their chithole countries in the middle east that history has relegated them to, they may do so. But when they come to my country, that kind of despicable and heinously criminal behavior is not going to be tolerated by them or those who side with it in silence.