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

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).

To find the three state institutions that deal with human rights violations, you can start by looking at the government structure and legal systems of a given country. Typically, most countries have specific institutions or bodies that focus on protecting and promoting human rights. Here is a generic example of three state institutions that address human rights violations:

1. National Human Rights Commission:
- Investigates and monitors human rights violations within the country.
- Receives and handles complaints related to human rights abuses.
- Recommends policy changes and legal reforms to ensure the protection of human rights.

2. Ministry of Justice:
- Oversees the judicial system in relation to human rights issues.
- Prosecutes perpetrators of human rights violations through the legal process.
- Collaborates with relevant stakeholders to develop policies and initiatives to safeguard human rights.

3. Office of the Ombudsman or Public Protector:
- Acts as an independent oversight body to ensure accountability and transparency.
- Investigates complaints against public officials for human rights infractions.
- Mediates between individuals and state institutions to resolve human rights disputes.

It's important to note that the names and specific responsibilities of these institutions may vary based on the country you are referring to. It is recommended to check the official government websites or consult legal resources of a specific country to get accurate and up-to-date information regarding their institutions dealing with human rights violations.