The ethnicization of the "black community" in the southern Colombian Pacific region is a process that originated at the beginning of the 1990s. Associated with the ruling of the article in the Political Constitution of 1991, which recognizes cultural rights and specific territories for the "black community," an innovative dynamic of organization was consolidated, articulated to politics of alterity in which multiple mediations and actors intervened. The present article is a contribution to the ethnography of the production of alterity, focusing on the black community as a political and legal subject in the region of the southern Colombian Pacific.