This chapter is based on research projects in intercultural psychosocial intervention with immigrants in Brazil, Brazilians living abroad, Brazilian returnees, and refugees in Brazil developed at two Brazilian universities. Based on a critical intercultural psychodynamic perspective the psychosocial intervention enables to our participants an existential redefinition and deconstruction of internalized hegemonic narratives. That deconstruction occurs with therapists as well who through supervised work are able to realize that explicitly or subtly reproduce ethnocentric perspectives. A revision both from clients as well as therapists, of images and representations of the other acquired through historic narratives that silence, omit, or distort their presence in societies, is necessary. Some clinical cases are described in order to illustrate that experience. Further, characteristics of intercultural therapists are discussed based on existing frameworks from cross-cultural counseling, cultural humility, and cultural safety concluding that a decolonial understanding is required in order for the encounter between professional and client not to reproduce an experience of symbolic violence. The project indicates the need for public policies to provide continuous education to professionals who are involved in intercultural mental health work with a critical and decolonial perspective.