In this extensively revised edition, Steve Fenton updates his concise and accessible introduction to ethnicity, drawing on new published work and recent social and historical changes. Discussing an extended range of theorists and illustrations from around the world, Fenton explores and clarifies the core meanings and the shifting ground of this contested concept. More space is given to ideas of 'threat' and 'competition' in conceptualizing ethnicity, as well as to recent issues in migration, especially increased migration to the USA from Central and South America. Fenton situates ethnic identities and interest in the changing modern world, and seeks to explain the contemporary conditions of delineation along ethnic and racial lines. Without assuming the centrality of ethnic difference, this book asks: Does it matter? When does it matter? Is it as important as many have assumed? The second edition of Fenton's highly regarded Ethnicity will continue to be an invaluable text for students of sociology, politics and international relations coming to the subject for the first time. Its innovative and challenging approach will also appeal to more advanced scholars of race and ethnicity.