Ethnicity and race data collection at some Latin American countries census

Latin America has tried to cope with ethnicity and race issues since the beginning of the colonization process till current days, therefore, how to collect this information is also a sensible point on census matter. Additionally, different countries build their racial and ethnical identity based on different criteria. From that we built an analysis of the criteria used by the last two Censuses round of Argentina, Brazil, Colombia, and Ecuador in South America. For that, initially, census criteria used to represent ethnic and racial categories in those four countries were assembled into a comparative table. Following it were assessed the constitutional and law changes concerning ethnical and racial issue, alongside the social movements/civil society demands for the same period. It made possible seeking the changes on census criteria for ethnic and racial data collection within and among those countries, highlighting the differences on how each country officially deal with their population diversity, as much as the legal disposition and census criteria intertwining changes. The results lead us to the main argument of the text: racial and ethnical data are a product of constitutional disposition reviews motivated by social demands and political relations in a very controversial environment.