Changing the contrast is not doctoring a photo. Everybody needs to calm down.
This is on the intellectual level of DU posters noticing that a sitting President has a bulge in his jacket during a debate and concluding that Karl Rove was moving his jaw muscles with electrodes.
Plus, I'm just not seeing what benefit they would derive from "washing out" the blue helmets and flag in this. The last thing the left wants to make people think is that the "glorious" UN would ever surrender.