Tom's character represents the Native American population in the United States at the beginning of the twentieth century. Displaced from their homes in the wilderness, Native Americans must live in an unfamiliar, materialistic world. They must also endure continual abuse and exploitation from the white population. In a broader sense, Tom also represents all those who have lost or forgotten their heritage, as well as all those who have struggled to define their role in society. The black bull is a metaphor of this.