Aristotle accurately characterized humans as political animals. Whether through birth or from choice, people naturally cluster into groups for protection, advancement, and the pursuit of well-being. But Aristotle's description does not hint at the powerful binary tension within this human tendency. Leaders enhance a social group's sense of identity by appealing to the members' commitments and shared traditions, to their hopes, strengths, sacrifices, and fears. Often, however, they cultivate not only an awareness of difference but even a sense of superiority, since for every social group there...

Aristotle accurately characterized humans as political animals. Whether through birth or from choice, people naturally cluster into groups for protection, advancement, and the pursuit of well-being. But Aristotle's description does not hint at the powerful binary tension within this human tendency. Leaders enhance a social group's sense of identity by appealing to the members' commitments and shared traditions, to their hopes, strengths, sacrifices, and fears. Often, however, they cultivate not only an awareness of difference but even a sense of superiority, since for every social group there...

This book examines a fundamental social paradox: although less equality certainly entrenches injustice, more equality may nevertheless protect the advantages that one group enjoys over fellow citizens. Their studies confront us with vivid cases where equality for some is preferred to equality for all.