As an activist and politician, he spent much of his life in the struggle for the enfranchisement and liberation of African people. He was a founder member and first General Secretary of the South African Native National Congress (SANNC), which would become the African National Congress (ANC) ten years later. As a member of an SANNC deputation, he traveled to England to protest against the Natives Land Act, 1913, and later to Canada and the United States where he met Marcus Garvey and W. E. B. Du Bois.