This volume brings together 28 testimonies of the classic protagonists of action art in Mexico in the 1970s, 1980s and 1990s. Its author, Dulce María de Alvarado Chaparro, vivaciously interviews the following creators and collectives, a quarter of whom have already deceased: 19 Concrete, Chrysler, Miguel Ángel Corona, Armando Cristeto, Felipe Ehrenberg, Roberto Escobar, Manuel Felguérez, Renato González Mello, Melquiades Herrera, Alberto Híjar, Francisco Icaza, Marcos Kurtycz, Manuel Marín, César Martínez, Mónica Mayer, Alejandro Montoya , Yoko Ono, Tomás Parra, Adolfo Patiño, Gustavo Prado, Mario Rangel Faz, Martín Rentería, Carlos Rush, Elvira Santamaría, Armando Sarignana, Grupo Semefo, Eloy Tarcisio and Raquel Tibol. In addition to providing an artistic documentation of first importance, this book is a contribution to the contemporary cultural history of our country. It includes a series of unpublished photos, which pay for the visual analysis of the period.