Cosatu is not perfect but ANC can learn few things from it - Ntshalintshali By Itumeleng Mafisa Share Johannesburg - Tension and instability within the ANC have affected the struggle of workers in South Africa, says Cosatu general secretary Bheki Ntshalintshali. Ntshalintshali was speaking to The Star against the backdrop of a busy political weekend with the country celebrating Workersâ Day and ANC leaders set to meet to discuss the controversial step-aside rule which has created further division in the governing party. He expressed dissatisfaction with the state of the alliance. âThe leader of the alliance (the ANC) is embroiled in its own struggle in that context and ... the whole alliance will be impacted one way or another.