Based on more than twenty years of border activism in San Diego–Tijuana and El Paso–Ciudad Juárez, this book is an interdisciplinary examination that considers the 1984 McDonald’s massacre, Minutemen vigilantism, border urbanism, the ongoing murder of women in Ciudad Juárez, and anti-border music. It is a theoretical and pragmatic analysis of the future of violence at—and because of—national territorial borders, and it offers a call for epistemic and cartographic disobedience.