Keynesian theory of economics says that the economy can be regulated with taxes, interest rates and social programs within the economy which increase demand and spending. Keynesian economics means that there is some government intervention within the free markets in a bid to stimulate it.
For purposes of this photo, it portrays an art and just as any painting, it used what was available to capture the eye of the beholder, thus, it was manufactured and created resulting in the final product, the photograph.