Answer:
The Black September terrorist group taking the Israeli wrestling team hostage, and their eventual execution/death, is the right answer.
Step-by-step explanation:
An attack by Black September, the Palestinian terrorist group in "Summer Olympics" held in Munich, West Germany is known as the Munich Massacre. In this attack, the Black September group took eleven members of the Israeli Olympic team hostage and executed them along with a police officer of West Germany. The police of West Germany, in an failed attempt to rescue the Israel team killed five of the eight members of Black September.