The category of "indigena" (indigenous) in Mexico has been defined based on different criteria through history, this means that the percentage of the Mexican population defined as "indigenous" varies according to the definition applied. It can be defined narrowly according to linguistic criteria including only persons that speak an Indigenous language, based on this criteria approximately 5.4% of the population is Indigenous. Nonetheless, activists for the rights of indigenous peoples have referred to the usage of this criteria for census purposes as "statistical genocide"<br> Other surveys made by the Mexican government do count as Indigenous all persons who speak an indigenous language and people who do not speak indigenous languages nor live in indigenous communities but self-identifies as Indigenous.