The Right to non-discrimination on grounds of race and ethnicity is explained in these documents:

Legally Obligating Documents
Additional (San Salvador) Protocol to the American Convention on Human Rights in the Area of Economic, Social and Cultural Rights  (3)
African (Banjul) Charter on Human and People's Rights  (2, 3)
American Convention on Human Rights  (1)
Arab Charter on Human Rights  (2, 9)
Convention on the Rights of the Child  (2(1))
European Convention for the Protection of Human Rights and Fundamental Freedoms  (14)
International Convention on Elimination of All Forms of Racial Discrimination  (1, 2, 3)
International Covenant Economic, Social and Cultural Rights  (2(2))
International Covenant on Civil and Political Rights  (2(1))

Standard Setting Documents
Beijing Platform for Action  (106(b, h), 107(e))
Cairo Programme of Action  (7.3, 7.7, 7.8, 7.12, 7.14)
Universal Declaration of Human Rights  (1, 2, 6)