Do you know why you are supposed to stay mum about the intentional Muslim sacrilege but plead to be forgiven for the accidental American offense? Because you would otherwise have to observe that the Koran and other Islamic scriptures instruct Muslims that they are in a civilizational jihad against non-Muslims, and that it is therefore permissible for them to do whatever is necessary — including scrawl militant graffiti on their holy book — if it advances the cause. Abdul Sattar Khawasi — not a member of al-Qaeda but a member in good standing of the Afghan government for which our troops are inexplicably fighting and dying — put it this way: “Americans are invaders, and jihad against the Americans is an obligation.”

Because exploiting America’s hyper-sensitivity to things Islamic advances the jihad, the ostensible abuse of the Koran by using it for secret communiqués is to be overlooked. Actionable abuse occurs only when the book is touched by the bare hands of, or otherwise maltreated by, an infidel.

As our great Iraqi ally Ayatollah Ali Sistani teaches, touching a kafir (“one who does not believe in Allah and His Oneness”) is to be avoided, because Islamic scripture categorizes infidels as equivalent to “urine, feces, semen, dead bodies, blood, dogs, pigs, alcoholic liquors,” and “the sweat of an animal who persistently eats filth.” That is what influential clerics — not al-Qaeda but revered scholars of Islamic law — inculcate in rank-and-file Muslims.

And they are not making it up. Sistani came upon this view after decades of dedicated scriptural study. In fact, to take just one telling example (we could list many, many others), the “holy” Koran we non-Muslims are supposed to honor proclaims (in Sura 9:28), “Truly the pagans are unclean . . . so let them not . . . approach the sacred mosque.” It is because of this injunction from Allah that non-Muslims are barred — not by al-Qaeda but by the Saudi Arabian government — from entering Mecca and Medina. Kafirs are deemed unfit to set their infidel feet on the ground of these ancient cities. You don’t like that? Too bad — grin and bear it . . . and, while you’re at it, surge up a few thousand more American troops to improve life in Kandahar.