The violence and inaction of the Brazilian state, public authorities, and indigenous organizations, combined with colonial legacies, play a crucial role in the ongoing land conflicts endured by indigenous people in Brazil. Therefore, this thesis explores indigenous resistance and disobedience actions through the lens of a decolonial praxis framework. By applying a multiple-case study designed to assess qualitative material - indigenous organization documents, literature, reports, and documentaries – along with three operational questions, this thesis analyses two specific cases: the Guardiões da Floresta group and the monitoring group in the Uru-Eu-Wau-Wau land. The analysis suggests that a careful interpretation of the cases is necessary to understand how they integrate with the theoretical framework. Resistance and disobedience may or may not be legitimate depending on their motivations, characteristics (violent or not) and goals. The findings contribute to ongoing studies within grassroots resistance approaches to indigenous conflicts and their acceptance.