This article emphasizes the diversity argument for affirmative action and seeks to build on the discussion of it by Fullinwider and Lichtenberg. I try to defend a view of affirmative action that depends on the notion that what is required by justice is restoration of voice to those whose voices were unfairly excluded, and I claim that such a view does not presuppose perspective unity or depend on the idea that affirmative action benefits the education of all. I also take up what Fullinwider and Lichtenberg call the legitimacy argument. I claim that the legitimacy of American society does not depend on the representation of diverse groups in positions of leadership per se. It depends on not unfairly excluding people from positions of leadership. When a group has been unfairly excluded, affirmative action can be an effective tool for restoring legitimacy.