Why do you think the Pentagon does not want the images displayed and have requested they be withdrawn from Al Jezeera?
If they were using your logic it would seem the Pentagon would not make such a request because the showing of the tape would imporove the "morale" of the soldiers.
Why do you think the Pentagon does not want the images displayed and have requested they be withdrawn from Al Jezeera? I cannot speak for the Pentagon.
However I suspect that it has to do with the Administration on-going concern about a possible grass-roots uprising against all things Islamic. Just a thought.