The International Legal Order's Colour Line traces a gnashed scar through slavery, the slave trade, colonialism and apartheid that still festers in the contemporary guise of racial discrimination. Schabas simultaneously has extracted from the official records of the League of Nations and the United Nations the minutiae of the resistance and resilience of Africans, Asians and the African diaspora against the racist colonial and colonial settler regimes and the ideological persistence of racial superiority of these formerly called "civilized nations". Bracing the cover is internationalist Paul Robeson, who mid-century, with other African Americans, demanded the immediate functionality of the UN human rights systems for all peoples. Schabas confirms that the demand is unremitting.
William A. Schabas is professor of International Law at Middlesex University London and distinguished visiting faculty at Sciences Po in Paris. He further holds the titles of professor emeritus at Leiden University and University of Galway. He is honorary chairman of the Irish Centre for Human Rights, and was a member of Sierra Leone Truth and Reconciliation Commission (2002-2004), chairman of Human Rights Council fact-finding commission on the Gaza conflict (2014-2015), and prepared quinquennial reports on the death penalty for the United Nations Secretary-General in 2020, 2015, and 2010. He is also an Officer of the Order of Canada, a member of Royal Irish Academy, and holds several honorary doctorates.