Guernica

This is a draft of "Guernica" by Pablo Picasso. It was created in response to the bombing of Guernica, a small city in the northern Spain, by German and Italian airplanes commanded by the Spain Nationalist forces in 26th April / 1937 during Spanish Civil War.
I had the opportunity to see this piece at the "FAAP Museum"in São Paulo, during the "Tauromaquia" show few weeks ago.
In the web you can find much more about this paint, previous drafts that the artist made (as this one I photographed) as well as it's history.