This chapter revisits the history of women-led urban protest in Latin America through the trajectory of Señora Sol, a veteran activist of Mexico’s Movimiento Urbano Popular (MUP). Emerging in the 1960s across the region, the MUP mobilised residents of low-income neighbourhoods—often women—to demand public services, social housing, and improved living conditions. In Mexico, these movements played a central role in the formation of the Party of the Democratic Revolution (PRD) in 1989 and in shaping grassroots political culture. Señora Sol’s experience illustrates the life cycle of this activism: institutionalised in the early 2000s, her association left her without a role until the rise of MORENA offered a new arena for engagement. Her story highlights how long-standing protest networks can be reactivated in new political contexts and how activism fosters modest but meaningful forms of social mobility. By connecting personal trajectories with shifting organisational frameworks, the chapter offers a sociological reflection on the durability and reinvention of women’s collective action in Mexico’s urban peripheries.