80 years ago, on April 26, 1937, during the Spanish Civil War, German and Italian aircraft bombed the city of Guernica in Asturias, which was held by the Republicans. It was the first bombing of a peaceful city in history that did not have air defense systems. Of the 5,000 population of Guernica, from 150 to 300 people died, several hundred were injured. Impressed by this tragedy, Pablo Picasso painted the painting Guernica, which became a symbol of the horrors of war.