Mandela 's 70th birthday in July 1988 attracted international attention , including a tribute concert at London 's Wembley Stadium that was televised and watched by an estimated 200 million viewers . Although presented globally as a heroic figure , he faced personal problems when ANC leaders informed him that Winnie had set herself up as head of a gang , the " Mandela United Football Club " , which had been responsible for torturing and killing opponents — including children — in Soweto . Though some encouraged him to divorce her , he decided to remain loyal until she was found guilty by trial
a tribute concert
Nelson Mandela 70th Birthday Tribute
Nelson Mandela