US antiracist and anticolonial movements were deeply networked long before the 1960s.

Evidence

In any case, the constitutive connections between American antiracist mobilizations and anticolonial activities were already prefigured in and through the mutual presence at the 1911 Races of Man Congress in London and the ensuing Pan Africanist Congresses of early American antiracist activists like W. E. B. Du Bois and Mary White Ovington, anticolonialists like Kwame Nkrumah (later the first President of free Ghana, who had graduated from an historically black American university), academics like Franz Boas, anti-imperialists like Karl Kautsky, and pacifists like post-World War II Japanese Prime Minister, Kijuro Shidehara. Those working against postbellum racism, segregationism, and accommodationism in the US were already in deep conversation from the early years of the twentieth century with African and Asian anticolonial activists, intellectuals, and leaders. These global meetings constituted a laboratory of antiracist, anticolonial, and anti-imperial ideas, commitments, and organizing. — David Theo Goldberg, The Threat of Race, 93

Categorization

• QUESTION: The 1911 Races of Man Congress — worth chasing the records of who else attended and what was actually debated there.
• XREF: connects to: Anticolonial and US civil rights struggles form one interconnected antiracist mobilization. — David Theo Goldberg, The Threat of Race: Reflections on…, 90; American antiracists and anticolonial activists shared organized networks from 1911 onward. — David Theo Goldberg, The Threat of Race: Reflections on…, 93