One of the defining features of American antidiscrimination law over the past several decades has been the proliferation of grounds on which people have sought legal redress for discrimination. Antidiscrimination claims based on race, sex, and religion remain common, but courts today also confront antidiscrimination claims based on disability, sexual orientation, language skills, weight, and appearance. Moreover, antidiscrimination claims today are not always brought by people traditionally understood to be victims of a particular type of discrimination-white people claim they have been discriminated against on the basis of race, men claim they have been discriminated against on the basis of sex, Christians claim they have been discriminated on the basis of religion, and beautiful people claim they have been discriminated against on the basis of appearance. Some of these claims have been recognized by courts; others have been rejected. This seminar will examine which forms of discrimination have been outlawed and why the law protects people against some forms of discrimination and not others. Our overarching goal will be to think through the important question of when discrimination is wrong and what the law should do about it.