The guy was not hunting, he was simply shooting.

I agree to a **point** with Irakly.. that is I see your view point, but I don't think it pertains to Tuna's Photo. Those people may have been dancing to a choreographed dance under lights he didn't set, but did they choregraph and set those lights with this vision in mind? No. He captured this vision. Studio Lighting aside, When is light **ever our own** anyway ?
I have thought about this subject before, If someone takes a picture, of lets say a wall with beautiful art / graffiti on it... People are going to think its beautiful . Was it the photo itself or the subject? It depends on if it is a straight on photo or if he worked other elements into the composition or not in order to make it his interpretation of it.
Plenty of people have taken well know art ( or even unknown for that matter) and "put a spin" on it.. I've heard plenty of times " this is my interpretation of this piece..." I think its fine, after all, we re-interpret in our minds anyway, Everyone had a different feeling or interpretation of " art" Taking a photo of it the way you see it, or taking a photo of sheerly because you thought that sculpture would look awesome with dark clouds and a rainbow behind it.. well its still your vision.. and on another note ( not sure if this fits in to this discussion, but it came to mind..) Photos of Plants : Landscaping could even be considered art as well, as it is an arrangement of plant life to gain a reaction from humans, butterflys, birds etc... So, if i take a picture of a flower dancing in the wind, is that okay? afterall a landscaper put it there in that arrangement, in a sunny spot.... lol.

Really, I think this discussion is fruitless, It should only be applied to one photo at a time, not photography as a WHOLE.