There may be disruptions to transport and other services across South Africa on 2 June as workers down their tools in support of striking security workers in the country. In the Cape companies likely to be affected by the secondary strike action include Metrorail and Transnet, according to the Congress of South African Trade Unions (COSATU), which is backing the protest. There could also be disruptions at city ports and airports. The bus and cleaning industries have instead been granted a court interdict preventing their employees from taking part although this is being challenged by COSATU on the grounds that workers have the right to strike. Security workers affiliated to the South African Transport and Allied Workers Union (SATAWU) have been on strike since March over wage demands. The protest action has been characterised by widespread vandalism and violence.