Rule #1: The inventor of the Islamic religion is universally-recognized as the final messenger of the One True God™, and must therefore always be referred to as the Prophet Mohammed.
(That's prophet, with a capital "P"!)
Rule #2: Doubt must always be cast upon the possibility that a member of the Religion Of Peace™ can ever engage in terrorism.
A Muslim slays two policewomen by slashing them across their throats, then shooting them in the head with their own guns? He then slays a civilian man passing by with said guns, drenching the victim's own mother with her son's blood? And all the while crying, "Allahu Ackbar"?
Sneer quotes in such cases are always de rigueur.