No, this isn't Photoshopped.
Yes, we're that profoundly messed up.
This isn't a matter of taking the moral high-ground. It's easy to scoff. Anyone can offer lofty, disparaging retorts about the grinning soldier in the photo. I'm not so much concerned about what she did as I am frightened by the possibility -- however slim -- that I could be that way too. After all, what really separates us, if anything?
Some people like to think that our "humanity" is in some way incorruptible and that we're largely immune to such things as giving toothy thumbs-up signs while posing next to blackening corpses.
I gave that nonsense up a long time ago.