The Munich massacre refers to the 1972 terrorist attacks at the summer Olympics in Munich, Germany. The Palestinian terrorist organization Black September kidnapped and murdered 11 Israeli athletes and coaches, and killed a police officer in the process.
Of 8 terrorists, 5 were killed and 3 were temporarily imprisoned until released to Libya in exchange for a Lufthansa passenger jet that had been taken hostage.
In response, Israel launched Operation Wrath of God, a series of clandestine activities directed at members of Black September and the Palestine Liberation Organization.
Cruelty of 1972 Munich Attackers: Among the most jarring Details are these: The Israeli team members were beaten, and, in at least one case, was castrared. What they did, they cut off his genitals through his underwear and abused him.
Neo-Nazi, Willi Pohl, aided Palestinian perpetrators of 1972 Munich Massacre.
There was a further Neo Nazis plan proposed to kidnap German politicians in an operation code named “Mosque.” 
Palestinian Authority's glorification
- Sam Borden, Long-Hidden Details Reveal Cruelty of 1972 Munich Attackers, The New York Times, Dec. 1, 2015.
In September 1992, two Israeli widows went to the home of their lawyer. When the women arrived, the lawyer told them that he had received some photographs during his recent trip to Munich but that he did not think they should view them. When they insisted, he urged them to let him call a doctor who could be present when they did. Ilana Romano and Ankie Spitzer, whose husbands were among the Israeli athletes held hostage and killed by Palestinian terrorists at the 1972 Olympics in Munich, rejected that request, too. They looked at the pictures that for decades they had been told did not exist, and then agreed never to discuss them publicly...
Among the most jarring Details are these: The Israeli team members were beaten, and, in at least one case, was castrared."What they did, they cut off his genitals through his underwear and abused him," Ms. Romano said, of her husband, Yossef. Her voice rose.
- Neo-Nazi 'aided Munich Olympics massacre', The Local, Jun 17, 2012.
- 'Neo-Nazis aided Munich Olympics massacre', Ynet, June 17, 2012.
- Ofer Aderet, "Neo-Nazi Aided Palestinian Perpetrators of 1972 Munich Massacre, Report Says," Haaretz, Jun. 17, 2012.
- Von Gunther Latsch und Klaus Wiegrefe, Files Show Neo-Nazis Helped Palestinian Terrorists in Munich 1972 Massacre, Der Spiegel, Jun 18, 2012.
Files Reveal Neo-Nazis Helped Palestinian Terrorists
Forty years ago, the massacre of Israeli athletes and coaches overshadowed the Munich Summer Olympics. Though it was never proved, left-wing extremists were suspected of working with the Palestinian terrorists behind the operation. But previously unreleased files seen by SPIEGEL prove that neo-Nazis were involved instead -- and officials knew about it… A Crazy Plan Pohl says that he proposed an international press conference in Vienna, which he would give together with a PLO official. According to Pohl, he flew to Vienna via Paris, which was corroborated by the statement his friend Abramowski made to the BKA foreign intelligence agency at the time, namely that Pohl was in Austria during the Olympics “to take care of something for the Palestinians there.”
When he saw on television that the hostage-taking operation had failed, Pohl left the country. A few days later, he was back in the Middle East, where PLO intelligence chief Abu Iyad was determined to get revenge. In Pohl’s account of events, he says that Iyad blamed the German authorities, more than anyone else, for the fact that the Munich operation had turned into such a disaster. Besides, says Pohl, Iyad believed a rumor that Israeli officers had led the failed rescue effort by German police.
From the standpoint of the PLO intelligence chief, this meant that Germany had intervened in the war between Israel and the Palestinians, making Germany an enemy that had to be dealt with. According to Pohl, Iyad asked to suggest possible German targets of future attacks. A few days later in Cairo, Pohl presented what he now calls a crazy plan.
He proposed occupying several city halls throughout Germany and taking local politicians hostage. Then, on Christmas Eve of 1972, a group of militants would storm the Cologne Cathedral. The goal was to force Germany and other countries to comply with a list of demands. The operation was given the code name “Mosque,” says Pohl.In mid-October, Pohl and Abramowski traveled to Madrid to receive weapons for these and other operations. They boarded a train to Munich, via Paris, taking the weapons with them. This is Pohl’s version, which essentially corresponds to information in the released documents.
- Palestinian Authority praises Munich massacre as a 'quality operation', JPost, Jan 30, 2021.
In a video shared by Fatah on the anniversary of the death of Black September commander Ali Hassan Salameh, the terrorist attack was classified as "a quality operation."
- Munich Olympic Massacre: Background & Overview (September 5, 1972) - JVL
- TIME Magazine: When the Terror Began. By Alexander Wolff. Aug 25, 2002
- Patrick Cockburn, 'Terrorism in Europe: In the Crosshairs Again,' Mango Media Inc., 2016