Proving a negative

Newsweek's assertion that they have no evidence that the guards at Guantanamo didn't throw the Q'ran down the toilet invokes a logical fallacy. The weekly is demanding the proof of a negative: "Prove that you did NOT do this". Proving a negative is impossible; that's why is a fallacy.
Much better, crisper, and funnier comment is here:
Day By Day by Chris Muir, cartoon for: 5/19/2005