Book excerpt: The America that seems to be disappearing before our very eyes is, George Lipsitz argues, actually the cumulative creation of yesterday's struggles over identity, culture, and power. At a critical moment, this book offers a richly textured historical perspective on where our notions of national knowledge have come from and where they may lead. Showing how American studies has been shaped by the social movements of the 1930s, 1960s, and 1980s, Lipsitz identifies the ways in which the globalization of commerce and culture are producing radically new understandings of politics, performance, consumption, knowledge, and nostalgia. Book jacket.