Quickly outgrowing its start among a small group of Cape Town activists, a number of whom had political roots in the Marxist Workers Tendency of the ANC,[5] TAC became a much more broadly based group, with chapters in many regions of the nation and a largely black and poor constituency.[6] The group campaigns for greater access to HIV treatment for all South Africans by raising public awareness and understanding about issues surrounding the availability, affordability and use of HIV treatments.