I do agree with their "truth" being challenged - that is universal even in killings that don't involve religion .... [Post #43]
Yes, good point. However, an important distinguishing feature – which you seem to be rather too quick to discount, is, I think, the magnitude of the effects: a mistake on the part of an individual may lead only to the death of no more than a few of their own immediate neighbors, but one on the part of a whole group can lead literally to the deaths of millions.
Apropos of which, I’m in the midst of reading Ibn Warraq’s Why I Am Not a Muslim – which I would highly recommend to you, and others. And the author, in the process of painting a quite damning picture of Muhammad as a “pious fraud”, notes an observation of a scholar in the field that:
Religion is gravely infected with intellectual dishonesty. [Richard Robinson; pg 25]
It is one thing to think that one’s religion has something important to say about morality without being dogmatic about it, but quite another – crossing the Rubicon as a matter of fact – to insist that one is speaking for god – as far too many are far too quick to be doing.