If they want to denounce terrorism then they could start by reigning in the terrorists in their "religion" - which seems to include just about every terrorist in the world.
It says alot that the largest weapons caches in Iraq have been found in mosques. What exactly do they pray for? Obliteration of more civilians? With "religions" like that, who needs satanic death cults?
And oddly enough, their communication was aimed at the non-Muslim world!?!
Why tell us?
Why don't they use this forum to teach their own people about the correct and peaceful, non-violent practise of their religion, instead of telling us our criticism of Muslims is unjust?
As a wise man once said, "Not all Muslims are terrorists, but all the terrorists have been Muslims."