The largest ethnic group is the Indo-Guyanese (also known as West Indians), the descendants of indentured laborers from India, who make up 43.5% of the population, according to the 2002 census. They are followed by the Afro-Guyanese, the descendants of slaves from Africa, who constitute 30.2%. The Guyanese of mixed heritage make up 16.7%, while the indigenous peoples (known locally as Amerindians) make up 9.1%. The indigenous groups include the Arawaks, the Wai Wai, the Caribs, the Akawaio, the Arecuna, the Patamona, the Wapixana, the Macushi and the Warao. The two largest groups, the Indo-Guyanese and Afro-Guyanese, have experienced some racial tension.