This article analyzes young people’s participation in socioenviromental issues in the Argentine Patagonia with a special emphasis on discourse changes, taking account of the articulation between the language of contention of environmentalism and  the discourse of feminist and indigenous movements. We examined the case of the young members of the group Pu Choyün, who, together with the socio-environmental assembly Jacobacci in defense of water and territory, face the threat of a gold and silver mining extraction project in Calcatreu area, in Ing Jacobacci (Rio Negro, Argentina). From an ethnographic approach and using some tools from Critical Discourse Analysis, we studied the reformulation of the circulation of meanings about activism underlying young people’s discourse. This analysis reveals the construction of a new way of  environmental activism and how demands are justified and political subjectivizations are displayed.