This Symposium issue of the Review is a satisfying conclusion for my three years as general editor. In her Introduction, Symposium editor Beth Mertz examines the long genealogy in law and society research of the central problem that the Symposium's contributors address, law and the constituting of communities. Community is a dual concept in law and society studies. First, it is a term that is used to refer to an empirical domain within which some research is situated, the boundaries of which simplify the task of description or analysis. Second, it is a normative concept associated with authority and, often, with meaningful action. Particularly in this second sense, community has been an important focus of recent thought and research, both as a foil for critical analysis of legal authority and its constitutive properties and as an element of work on the constitution and reconstitution of action and identity. This Symposium is intended to draw attention to the importance of continuing work on the group concepts that frame, with varying degrees of explicitness, law and society studies of action and identity—race, gender, class, and, overlapping all, community.