Poster advertising the Nelson Mandela Freedom March, 12 June–17 July 1988. Twenty-five freedom marchers, one for each year of Mandela’s imprisonment, walked nearly 600 miles from Glasgow to London. They were seen off at a rally in Glasgow on 12 June by ANC President Oliver Tambo. Along the way they held meetings and events calling for Mandela’s release. On 17 July over 50,000 people joined the marchers on the last leg of the march to Hyde Park, where a crowd of a quarter of a million people heard Desmond Tutu call for Mandela’s release.