In August 1981, at the height of the Springbok rugby tour protests, Prime Minister Robert Muldoon released a list of 15 'radicals' and 'subversives'. The list was part of a report provided by the Security Intelligence Service (SIS), following a request from Muldoon to investigate the anti-tour movement. The report claimed that the Wellington protest group COST (Citizens Opposed to the Springbok Tour) was 'greatly influenced' by the Workers' Communist League, a group the SIS regarded as subversive. The report also claimed that the Auckland group MOST (Mobilisation to Stop the Tour) had been infiltrated by 'radicals bent on violence'. The report was denounced by anti-tour activists and Muldoon's political opponents as inaccurate and a device to further polarise the country. Muldoon was unapologetic, stating that 'genuine' protesters were being used for 'subversive purposes' by those named in the report.