Imagine the reaction of Catholics if some lunatic fringe terrorist group committed similar atrocities in the name of the Pope or Catholicism. Catholics worldwide would be denouncing the terrorists. All we hear from the Muslim community is silence if not tacit approval for these barbaric acts.
Even worse, we hear a lot of whining as they try to turn things around and make themselves out to be the victims. Like the Left, they change the subject and try to obfuscate. If they remained silent, you might ascribe it to fear of the terrorists among them. But when they whine, you know they're just running interference for the terrorists among them.