" Human competitiveness and territoriality were often at the root of particularly horrible fashions in oppression. We human beings seem always to have found it comforting to have someone to took down on—a bottom level of fellow creatures who are very vulnerable, but who can somehow be blamed and punished for all or any troubles. We need this lowest class as much as we need equals to team with and to compete against and superiors to look to for direction and help. "

― Octavia E. Butler , Earthseed: Parable of the Sower and Parable of the Talents