[Cesar] Vallejo was at least metaphorically killed by fascist forces, in the sense that he wore himself out raising funds for the Republicans in the Spanish Civil War and got sick and died.
I could see no reason why used tram tickets, bits of driftwood, buttons and old junk from attics and rubbish heaps should not serve well as materials for paintings; they suited the purpose just as well as factory-made paints It is possible to cry out using bits of old rubbish, and that's what I did, gluing and nailing them together.