What are the motifs in Rain of Gold by Victor Villasenor?

Humor is a motif in this story. While there is a great deal of violence throughout the story, there are episodes of humor as well. One of the first is somewhat stomach turning, but contains not only humor, but reality of life as well. When Lupe's older sisters are forced under a pile of fresh manure to hide from bandits, the more proper and spoiled sister, Carlota, is reluctant to allow herself to be covered in this manner. Finally, being physically pushed by her mother, she was, "trying to get out of the crevice until she got a wet piece of chicken shit in her mouth."