Non-discimination is enshrined in Article 1 and Article 2 of the Universal Declaration of Human Rights.
Human Rights Committee (if the optional protocol is ratified by the state)
Special Rapporteur on contemporary forms of racism, racial discrimination, xenophobia and related intolerance
Special Rapporteur on the human rights of migrants
Special Rapporteur on the situation of human rights and fundamental freedoms of indigenous people
African Commission or Court on Human Rights and Peoples’ Rights