Our food system is global. For some, this arrangement ensures access to healthy food from nearly every part of the planet. But many others inhabit a world of violent displacement, brutal working conditions, and starvation, one in which the very people who grow the world’s food cannot feed their families. What would it take to build a just food system? To answer this question, we will study the many efforts—from organic certification and cooperatives to land occupations and food sovereignty movements—to transform the production, circulation, and consumption of food. We will explore how these struggles illuminate the social and ecological problems created by our current food system, and how we might create something better.