T.W. Thibedi, radical school-teacher, was a leading figure in the anarchist / syndicalist International Socialist League (ISL) and the revolutionary syndicalist Industrial Workers of Africa (IWA) union. He was involved in late 1910s struggles, like the March-April 1919 anti-pass law campaign on the Witwatersrand. The campaign had been driven by more radical members of the Transvaal ANC — including members of the revolutionary ISL and IWA, like Fred Cetiwe and Hamilton Kraai. But the campaign was called off by conservative leaders of the South African Native National Congress (now the African National Congress, ANC).
