On July 27 , 2012 , over 20,000 people throughout London attended a " Minute for Munich " program organised by the British Zionist Federation . On the same day , a memorial was held in Trafalgar Square that was attended by approximately 400 people to commemorate the 40th anniversary of Munich massacre . The event , organised by the British Israel Coalition , was " a response to the International Olympic Committee 's sustained refusal to include a minute of silence in the opening ceremony due to be held tonight . " British Prime Minister David Cameron agreed to attend a commemoration at Guildhall to mark the 40th anniversary of the Munich massacre and in honour of the victims of the massacre . Prime Minister Cameron said , " It 's right that in 2012 – 40 years on from the Munich Olympics – we remember the Israeli team members who were killed there . " Israelis marked the 40th anniversary of the Munich massacre in London , during which prayers were read for the 11 murdered Israelis , wreaths were laid , and a plaque was unveiled approximately four miles from the Olympic Stadium . London Mayor Boris Johnson attended the event , and recalled watching the massacre in 1972 unfold when he was 8 years old . Johnson said , " What sticks in my mind is that sense of sacrilege and a feeling of horror that the world 's greatest sporting event should suffer such an attack , and that an attack should be mounted against people who had been training for what should have been the greatest event in their lives . And I think the world watched with a sense of numb disbelief as those events unfolded because sport should transcend politics . " In addition , Israeli TV commentators held an informal 30-second silence during the Olympics opening ceremony
Munich massacre
Munich massacre
2012 Olympics one minute of silence campaign