Following her positions as a legal clerk, she was awarded a Bernstein International
Human Rights fellowship to join the migrant rights project at
Johannesburg's Lawyers for Human Rights. At UCLA, Achiume leads the International Human Rights Clinic, a programme which teaches students international human rights through clinical projects. The projects led by Achiume include providing legal support for
Indigenous peoples of the Americas, legal policies in
Los Angeles and
incarcerated women. As part of the programme, Achiume worked with Dignity and Power Now, an organisation in Los Angeles that looks to support incarcerated people and their families. She and her students looked at violations against incarcerated women of colour who suffered from mental illness. She demonstrated that these women were regularly denied physical or mental health support. She chaired the 2016
American Society of International Law annual meeting. In 2017 Achiume was appointed to the
United Nations Human Rights Council as the
UN special rapporteur on Racism, Racial Discrimination, Xenophobia and Related Intolerance. She was the first woman to hold such a position. Her verdict was that the
Home Office hostile environment policy had "entrenched racism" across the United Kingdom. She encouraged the
Government of the United Kingdom to evaluate its policies on discrimination and to investigate the criminalisation of young Black men. Achiume identified that the anti-foreigner rhetoric that developed during the
Leave.EU campaign was permeating society, and that austerity measures were disproportionately impacting communities of colour. This visit was documented in her first report to the
United Nations General Assembly, in which she concluded that "ethnonationalist populism" posed a considerable threat to racial equality. In 2019, she benefited of the support of UCLA which received to this end a grant from the
Ford Foundation, especially for research about raising issues from the Global South. During the
COVID-19 pandemic, Achiume studied the rise in
racism and
xenophobia that spread alongside
SARS-CoV-2. Achiume emphasised the need for education in combating racism, and that racial and xenophobic discrimination should become a more substantial part of education. In October 2023, Achiume signed a letter to
Joe Biden condemning
Israel’s bombardment and intensifying blockade of
Gaza and calling for an immediate cease-fire. The letter was signed by legal scholars from some of the United States' most prestigious law faculties. == Selected publications ==