In this comprehensive collection of essays, three generations of international scholars examine Mexican muralism in its broad artistic and historical contexts, from its iconic figures - Diego Rivera, Jose Clemente Orozco, and David Alfaro Siquieros - to their successors in Mexico, the United States, and across Latin America. These muralists conceived of their art as a political weapon in popular struggles over revolution and resistance, state modernization and civic participation, artistic freedom and cultural imperialism. The contributors to this volume show how these artists' murals transcended borders to engage major issues raised by the many different forms of modernity that emerged throughout the Americas during the twentieth century.