The three state institutions that deal with human rights violations and explain three roles each institutions plays in addressing violations of human rights.

Answer 1

A start from Internet:

Committee on the Elimination of Racial Discrimination (CERD). This committee comprises of a body of independent experts that are tasked with monitoring that all state parties are implementing the Convention on the Eradication or elimination of all forms of racial discrimination.
Human Rights Committee (CCPR). This committee is made up of independent experts that monitor the State parties' implementation of the International Covenant on Civil and Political Rights.
Committee on Economic, Social and Cultural Rights (CESCR). This committee comprises of eighteen experts that are independent and are tasked with ensuring that state parties are implementing the International Covenant on Economic, Social and Cultural rights.
Committee on the Elimination of Racial Discrimination (CERD).