Amnesty 's British Section then booked one of Britain 's largest concert venues , the 65,000 capacity Milton Keynes Bowl and at very short notice staged a weekend-long extravaganza titled '' Amnesty International Festival Of Youth '' . Fatally for the event , Amnesty 's in-house producer Pat Duffy scheduled the event to follow just one week after the long-announced '' Nelson Mandela 70th Birthday Tribute '' at England 's 82,000 capacity Wembley Stadium . The Nelson Mandela concert had already lined up appearances by many of Amnesty 's most prominent supporters in the music community – including Sting , Peter Gabriel , Eric Clapton , Phil Collins , Bryan Adams , Jackson Browne , Steven van Zandt , Midge Ure , Simple Minds , Youssou N’Dour , Joan Armatrading – all of whom declined to partake in the new Amnesty show taking place just one week later . This made it virtually impossible for the comparatively last-minute Amnesty event , with less celebrated performers , organised by people without much previous experience , to succeed . Amnesty resisted recommendations to postpone or cancel the event and proceeded with the weekend
Nelson Mandela 70th Birthday Tribute
Nelson Mandela 70th Birthday Tribute
The Secret Policeman's Ball