This study explores the political mobilisation of marginalised communities through a comparative analysis of the AHINDA movement in Karnataka and black political cohesion in the early 20th-century United States. AHINDA, an acronym for minorities, backward classes, and Dalits, emerged as a socio-political coalition aimed at restructuring caste power in Karnataka politics. Similarly, Black political cohesion in the United States developed as a response to racial segregation, disenfranchisement, and systemic inequality. Although these movements arose in different socio-historical contexts, both represent strategic efforts by marginalized communities to consolidate political agency against entrenched hierarchies. Using comparative political sociology, this paper explores their origins, leadership structures, ideological frameworks, electoral strategies, and long-term impacts on democratic participation. The analysis demonstrates that identity-based coalitions can significantly reshape political discourse while simultaneously facing challenges of internal fragmentation and institutional resistance.