[12] Pearson's anthropological views drew on the theories of British anthropologist Arthur Keith, who had argued that human races were distinct evolutionary units destined to compete for resources.

"[15] In his work, Pearson described racial types as subspecies, which he defined as "a distinctive group of individuals which are on their way to becoming separate species, but which have not been isolated long enough, or had time to become sufficiently diversified to lose the power to inter-breed".

[16][17][18][19] In 1995 and 1996, Pearson published a trilogy of articles in Mankind Quarterly regarding the "Concept of heredity in Western thought", a defense of hereditarianism and a denouncement of the "onslaught of egalitarianism".

[24] Recently arrived in the United States, Pearson contributed to some of the publications of anti-Semite Willis Carto, such as Western Destiny, and to Noontide Press.

"[25] As Lanton he published articles such as "Zionists and the Plot Against South Africa," "Early Jews and the Rise of Jewish Money Power" and "Swindlers of the Crematoria.

In 1978 he took over the editorship of the journal Mankind Quarterly, which had originally been founded in 1960 by Robert Gayre, Henry Garrett, Corrado Gini, Ottmar von Verschuer and Reginald Ruggles Gates.

[30] According to William Tucker's description, he fired most of the non-tenured faculty, hiring instead scholars such as Robert E. Kuttner and Donald A. Swan, both with similar political backgrounds to Pearson.

"[33][34] In 1958, Pearson founded the Northern League for North European Friendship, an organisation promoting Pan-Germanism, Antisemitism and Neo-Nazi racial ideology.

"[36] In 1959 in the Northlander, Pearson described the aim of the organization as preventing the "annihilation of our kind" and to lead Nordics in Europe and the Americas in the "fight for survival against forces which would mongrelize our race and civilization"[16] He also wrote of the need for "a totalitarian state, with conscious purpose and central control .

[41] Pearson also corresponded with American segregationist Earnest Sevier Cox, a dedicated member of the League, who had lobbied for a federal funding to "repatriate" African-Americans to Africa since the 1920s.

[33] Cox suggested to Pearson that they should hold a meeting at Detmold in West Germany, near what was then believed to be the site where the Germanic tribes defeated the Romans in the Battle of the Teutoburg Forest.

As world chairman of the WACL, he worked with the U.S. government during the Cold War, and collaborated with many anti-communist groups in the organisation, including the Unification Church and former German Nazis.

He also served on editorial board of the several institutions, including The Heritage Foundation, the Foreign Policy Research Institute, and the American Security Council, and a number of conservative politicians wrote articles for Pearson's Journal on American Affairs and related monographs, including Senators Jake Garn (R-UT), Carl T. Curtis (R-NE), Jesse Helms (R-NC), and Representatives Jack Kemp (R-NY), and Philip Crane (R-UT).

Senators and opened by the United States Marine Corps Band and Joint Armed Services Honor Guard, was attended by several hundred members from around the world.

After the meeting had been condemned in Pravda, The Washington Post published an even more critical attack on both WACL and Pearson's extreme right wing politics.

[13][51] Pearson resigned from the WACL in the wake of accusations that he "encouraged the membership of European and Latin American groups with Nazi or neo-Nazi ties".

The White House did not retract the letter, but made a public statement in which the Presidential secretary affirmed the Presidents' repudiation of any sort of racial discrimination.

[52] One member of the WACL, conservative politician Geoffrey Stewart-Smith, described the organization during its period under Pearson as "largely a collection of Nazis, Fascists, anti-Semites, sellers of forgeries, vicious racialists, and corrupt self-seekers.

"[53] After The Washington Post article, Pearson was asked to resign from the editorial board of the neoconservative Heritage Foundation journal Policy Review, which he helped found, but his connection with other organisations continued.