["Nations and Nationalism, EarlyView. ", "\nABSTRACT\nDuring the 1960s and 1970s, anticolonial liberation narratives transcended the geopolitical boundaries of the Global South and profoundly shaped nationalist movements in Europe. Although the anticolonial frame gained momentum during this period, its overtly confrontational rhetoric was gradually supplanted by moderate frames that aligned with popular demands. Through 20 in‐depth interviews with key Galician nationalists, we explore the tension between the movement's public‐facing frames and its hidden interpretative frames that are rooted in anticolonial thought. The findings reveal that, although explicit references to colonialism have largely disappeared from official discourse, the movement's internal cohesion relies on an unspoken grammar of resistance. The conclusions highlight the need to complement the study of a movement's externally resonant public discourse with an investigation of its internally inherited interpretative frames. Only through this combined approach can scholars identify the hidden frames whose internal resonance sustains both long‐term group cohesion and strategic alignment.\n"]