Military Censorship

Should it be legal for the Pentagon to withhold pictures, film footage, and blogs from the public when they are taken by military personal as they did with one tape of footage from the up coming film War Tapes?

Personally I think that this kind of censor ship is bullshit, mostly because the tapes, pictures, and blogs they are censoring do not show anything related to our national security, unless you consider footage and stories of American brutality and the honest truth of war to be related to our national security, which one could argue it does, because some of the footage being held back would lead to other governments wanting to attack America.