Using food system transformation as a lens, this chapter explores the common ground between art activism and prefigurative politics. Art activists that engage with food production embrace it as a tool for both aesthetic expression and political critique, by deconstructing the inequality of food systems and proposing alternative models of human interaction with the land that emphasise care, diversity, equity, justice, relationality, and sovereignty. By creating living examples of sustainable alternatives, fostering experimentation, challenging dominant systems, cultivating hope and agency, and integrating social and ecological concerns, prefigurative politics and art activism are therefore closely intertwined, influencing and complementing each other in the pursuit of social transformation. Artists can make grassroots projects visible and tangible, possible and probable, effective and meaningful, replicable and connected, local and open, while the creative process itself can be considered as a method of prefiguration, by making speculation easier to experience, to experiment with, and ultimately to enact, assembling matter into form as a capacitor of a prefigurative imaginary at work. Art activism has unique potential to engage with deep leverage points in sustainability transformations by focusing on fundamental myths, paradigms, and systems of meaning-making, and to link to structural and institutional change through chains of leverage.