How does the author use foreshadowing in Pilgrims in Aztlan?

From the beginning, Mendez informs the reader that this story is not going to be an easy one to read. His use of words and phrases such as bad luck, anger, aching, dirt, furious, poisonous, and brutalizing leave little to the imagination. He also foreshadows the types of characters in Loreto's stories by stating that the foul-smelling city in which the story is about to be told "bore the curses of so many frustrated individuals: veterans of the dirty wars, whoring and the unemployed rumbling with chronic hunger."