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One of the Black September guerrillas who broke into the Munich Olympic Village, killed two members of the Israeli team and took nine others hostage. Eventually all the hostages were killed after a pitched battle at Munich Airport. (Photo by Keystone/Getty Images)

One of the Black September guerrillas who broke into the Munich Olympic Village, killed two members of the Israeli team and took nine others hostage. Eventually all the hostages were killed after a pitched battle at Munich Airport.    (Photo by Keystone/Getty Images)

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A Palestinian guerilla member appears on the balcony of the Israeli house watching an official on September 05, 1972 at the Munich Olympic village. A group of "Black September" Palestinian guerrillas broke into the Israeli building in the Olypmpic village near Munich where 10,000 athletes were staying 05 September. Eleven Israeli hostages were killed in the attack. / AFP / EPU / - (Photo credit should read -/AFP/Getty Images)

A Palestinian guerilla member appears on the balcony of the Israeli house watching an official on September 05, 1972 at the Munich Olympic village. A group of "Black September" Palestinian guerrillas broke into the Israeli building in the Olypmpic village near Munich where 10,000 athletes were staying 05 September. Eleven Israeli hostages were killed in the attack. / AFP / EPU / -        (Photo credit should read -/AFP/Getty Images)

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6th September 1972: A German official negotiating with the terrorists who are holding Israeli athletes hostage in the Olympic Village in Munich. (Photo by Keystone/Getty Images)

6th September 1972:  A German official negotiating with the terrorists who are holding Israeli athletes hostage in the Olympic Village in Munich.  (Photo by Keystone/Getty Images)

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MUNICH, FRG - SEPTEMBER 5: A track suited West German security official keeps and eye on the quarters of the Israili Olympic team where members of the Black September Organization (a terrorist group afilliated with the Palestine Liberation Organization) are holding 9 surviving Israeli hostages, on September 5, 1972 in Munich, West Germany. (Photo by Michael Montfort/Michael Ochs Archives/Getty Images)

MUNICH, FRG - SEPTEMBER 5:  A track suited West German security official keeps and eye on the quarters of the Israili Olympic team where members of the Black September Organization (a terrorist group afilliated with the Palestine Liberation Organization) are holding 9 surviving Israeli hostages, on September 5, 1972 in Munich, West Germany.  (Photo by Michael Montfort/Michael Ochs Archives/Getty Images)