Leaving aside the fanatic fringe -- and it is just a fringe -- much of the world conflates "Muslim" and "Arab," although this is far from accurate. Many people seem willing to attribute the worst characteristics of a few to the many, and so the actions of a relatively small number of murderers can taint all 1.6 billion Muslims and 340 million Arabs.
Let's not lose sight of the grotesque reality of chemical weapons. But what about military intervention? Can we make things better? War is evil. Assad is evil. But what is the likelihood of some targeted cruise missile strikes actually improving things? In the words of the philosophers, what is the reasonable likelihood of success?