Although democracy is committed to an ideal of equal treatment, we do not always agree on what that commitment requires. In this bold effort to work out when we may morally draw distinctions among people, Deborah Hellman unearths assumptions and unspoken biases that have invisibly corrupted political debates, such as those about affirmative action and the accommodation of the disabled. Cutting through misleading distinctions and false dichotomies, she gets to the heart of what equality means.