This article explores the uses of emotion in activist research inspired by the direct action of black mothers who had children killed due to state-sanctioned violence in Rio de Janeiro, Brazil. The outrage they feel due to the antiblack violence enables them to express how oppression and terror operate in their lives through an intersection of race, gender, and space. Activist research carried out in collaboration with these mothers since 2010 points to the need for new approaches to anthropology to understand the complexity of their struggle and to be loyal to their epistemologies of resistance. Therefore, this article advocates an outraged anthropology, an anthropology that recognizes emotions as an expression of a person or group of people in opposition to an unjust power structure and recognizes the mechanisms by which the person or group deals with the emotion as a narrative of resistance and source of collective struggle. This approach includes a black feminist perspective linking the anthropology of emotions to African diaspora studies and activist research methods. I propose that recognizing emotion as anthropological data in activist research and the value of feelings as a methodology of oppressed people can improve analysis and writing and create new sources of vision and political possibilities.