Members of the #ZumaMustFall campaign were behind the controversial billboard on a building in the Cape Town CBD last week, according to a community activist close to the project. While the movement has denied being involved, Anton Schutte, who is a member of an online "community" called South Africans for Change, said the #ZumaMustFall campaign members did not want publicity and had chosen not to speak to the media.Schutte, who owns an aerial photography company and recorded the campaign's march in Cape Town last year using drones, said he had not been directly involved in the project.On Saturday the billboard was defaced by protesters wearing ANC T-shirts, and the remaining bits were removed on Sunday. By Tuesday it had been replaced by a poster of the South African flag.Schutte said the #ZumaMustFall campaign members involved in last week's billboard would not confirm or deny that they had paid for the latest flag to be erected.#ZumaMustFall campaign member Sifiso Madondo, who previously denied the group had any involvement in putting up the billboard, said yesterday he did not know if any of members were involved, but "supported them" if they were."This movement is open to anyone and people can easily become members online."If they are our members it's fine because we support the message, but we don't know who they are," Madondo said.City of Cape Town spokesman Priya Reddy said the contravention of the city by-law was not the content of the poster but rather the structure that held it up."The structure that holds the vinyl sign up remains illegal," said Reddy.The city is proceeding with the prosecution of Independent Outdoor Media, the firm that owns the advertising space on Overbeek Building."A summons is being drawn up and will be delivered to the owner of the signage company. We want them to remove the signage structure," Reddy said.The city has also issued a notice to the building's body corporate to remove the structure.Independent Outdoor Media managing director Bent Dyssell - who has refused to name his client - did not respond to attempts to contact him yesterday...