How does the author use foreshadowing in The Day of the Locust?

In Chapter Twenty-One, the cock-fight is a study in foreshadowing, as all the men in the garage gathered around the cockpit will soon be gathered around Faye in the same way. This time, it will be one of the onlookers who will receive a fatal blow. Faye is in control of all of these men, and she could have her pick as she struts and preens in the middle of their circle. Tod and Homer eventually remove themselves from the circle, and we're left to wonder who her next victim will be.