 Guyanese of mixed heritage make up 19.9% while the indigenous peoples (known locally as Amerindians) make up 10.5% 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.Most Indo-Guyanese are descended from Bhojpuri-speaking Bihari, Uttar Pradesh, and Bengali migrants.