One of the black power movement's most outspoken people, fannie hamer angela davis or doris derby , was a socialist whose gun was used to kill a judge.

It was Angela Davis.  It was alleged that the guns she owned were used to by suspects who took a judge and three jurors hostage and this led to the deaths of those involved.  She was arrested and tried but was pronounced not guilty because even though she owned the gun it was not enough grounds to find her guilty of the crime.

Explanation:

- Climate change

Description: Climate change refers to man made activities that have resulted in colder climate for some parts of the world, and also hotter climate for other parts of the world.

UN Agency: Intergovernmental panel on Climate change (IPCC), United Nations Development Organization (UNDP)

- Health and medicine

Description: Because of the discovery of new deadly diseases every year the United Nations has organizations in place to research cures to immerging disease.

UN Agency: World Health Organization (WHO)

- Human Rights

Description: In a world where the less privilege are discriminated against on the basis of ethnicity, education status, religious affiliation etc, the United Nations has organizations that seeks to guarantee human rights protections.

UN Agency: United Nations Educational, Scientific and Cultural Organization  (UNESCO), Human Rights Watch

- Weapons of mass destruction

Description:

UN Agency: United Nations Office for Disarmament Affairs (UNODA), International Atomic Energy Agency (IAEA), Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization.

- Global trade

Description: Economic development is still lacking in many parts of the world, and so achieving economic prosperity is believed to be possible through global trade.

UN Agency:  UN Inter-Agency Cluster on Trade and Productive Capacity (UNCTAD).

- Access to water

Description: Lack of access to water is still a major problem in developing countries today, thus, the United Nations has organizations that seeks to ensure everyone has access to clean water.

UN Agency: UN-Water, World Health Organization (WHO), World Food Program (WFP).

- Energy sources

Description: Today, there is limited access to energy and not all energy sources are considered safe, and so the UN tries to solve this problem.

UN Agency: United Nations Energy (UN-Energy)

- Terrorism and counterterrorism

Description: With a rising threat of terrorism, a big concern for governments today is to combat or prevent terrorism.

UN Agency: United Nations Counter Terrorism Center (UNCTC)