For you are looking down the lense of piece of hardware that can convert three dimensional reality into two dimensional representation.
And once we have reduced reality by one dimension, we can do what we like with it.
And being reduced by one dimension, reality becomes art and can be used to deceive or elucidate.
And truth as you know is the first casualty of war, and the camera fires the first shot.
At the same time we all know that the camera never lies, so our disbelief is automatically suspended - and we are primed and ready to believe the propaganda of war.
Just as Bishops are inclined to believe the propaganda of actresses.