Since the first years of the 21st century, the Ecuadorian indigenous movement, classified as the most overwhelming social actor since its emergence in the mid 1980s, finds itself in crises, with its principal organizations marked by tensions and conflicts. With a departure in the fragmentation of the indigenous movement, the context of the study is the impact of issues related to the concepts of class and ethnicity. In order to achieve a deeper understanding of the topic, the approach is based on a comparative study of different historical periods. The theoretical part of the study mainly focuses on analysing the concept of social movement in relation to indigenous movement. By comparing different periods, the study seeks to demonstrate that the inter-relationship between class and ethnicity has changed due to the context. For example, the revival of once-impotent leftist parties and movements has altered the relations of power and the incentives that strucktured past linkages between the indigenous movement and the political left. Thus, due to the meteoric rise of Rafael Correa and his radical political project, the indigenous movement is confronted with a new kind of challenge. In this context, the concepts of plurinationality and interculturality have emerged and further polarized the positions both between the left and the indigenous movement and between the two indigenous organizations: CONAIE and FENOCIN. In light of these aspects, the ambition of this study is to emphasize the importance of highlightning the concepts of class and ethnicity, when analysing the cause of the current fragmentation of the indigenous movement in Ecuador.