I simply cannot let this go unsaid. My brother and sister Christians are suffering in Iraq (hence the "Nun" symbol above), by those whose religion bids extermination of infidels.
Quran (4:89) - "They but wish that ye should reject Faith, as they do, and thus be on the same footing (as they): But take not friends from their ranks until they flee in the way of Allah (From what is forbidden). But if they turn renegades, seize them and slay them wherever ye find them; and (in any case) take no friends or helpers from their ranks."
Quran (9:123) - "O you who believe! fight those of the unbelievers who are near to you and let them find in you hardness."
Quran (17:16) - "And when We wish to destroy a town, We send Our commandment to the people of it who lead easy lives, but they transgress therein; thus the word proves true against it, so We destroy it with utter destruction." (Note that the crime is moral transgression, and the punishment is "utter destruction.")
Now, let me be clear. I am sure that the majority of Muslims do not take these verses nor the other verses of violence literally, in the same way that the Christian will not take the warspeak in the Old Testament literally, but apply the allegory of battle to the spiritual battle against Evil that we face daily. It's quite easy to apply these verses to destroying all vice with in us, fighting against our own unbelief and killing all sinful thoughts before they can take root in the soul.
I am sure that the majority of Muslims wish to play their part in society, live responsible and peaceful lives and make a positive contribution. Muslim scholars have contributed vastly to science, mathematics, astronomy, philosophy and medicine - it was the diligence of the Arabs that saved Aristotle from being completely obliterated. Contrary to the knee-jerk reactions to what is happening, there are reports of Muslims who will give up their lives to stand up against the violence.