How is social mobilization possible in gang territories? Anjuli Fahlberg's research answers this question, affirming the necessity to differentiate favela activism from traditional social movements. Activism under Fire is a powerful concept to understand the strategy of non-violence adopted by political actors as part of their resistance and adaptation to violent and restrictive contexts. Fahlberg's original participatory field research reveals how favela activists have constructed a sphere of non-violent politics, which operates politically parallel to, and symbolically in opposition to, the sphere of violent politics in the neighborhood.