I can't view your picture as 'staged' / 'not staged'. Therefore I can't vote. To me that is immaterial. The more important question is: What does this picture mean to you? And that will be different for many people, but to me it's a reminder of a very ugly time in the history of humans. I value compassion and empathy, but also value truth and honesty. So it's with slight reluctance I say this, because it stirs powerful emotions within me, but I also am trying to understand your motif(s).
The most interesting discussion surrounding this picture has nothing to do with whether it is staged or not, in my humble opinion; it has to do with what it means to people, how they react to it, and what emotions it stirs. Ugly truth is better than a lie any time.