eesink created quite a stir when he won the final of the open weight division, defeating Akio Kaminaga in front of his home crowd.
Performances at the 1968 Mexico City games were affected by the altitude of the host city. The 1968 Games also introduced the now-universal Fosbury flop, a technique which won American high jumper Dick Fosbury the gold medal. In the medal award ceremony for the men's 200 meter race, black American athletes Tommie Smith (gold) and John Carlos (bronze) took a stand for civil rights by raising their black-gloved fists and wearing black socks in lieu of shoes. They were banned by the IOC. Věra Čáslavská, in protest to the 1968 Soviet-led invasion of Czechoslovakia and the controversial decision by the judges on the Balance Beam and Floor, turned her head down and away from the Soviet flag whilst the anthem played during the medal ceremony. She returned home as a heroine of the Czechoslovak people, but was made an outcast by the Soviet dominated government.
Politics again intervened at Munich in 1972, with lethal consequences. A Palestinian terrorist group named Black September invaded the Olympic village and broke into the apartment of the Israeli delegation. They killed two Israelis and held 9 others as hostages. The terrorists demanded that Israel release numerous prisoners. When the Israeli government refused their demand, a tense stand-off ensued while negotiations continued. Eventually the captors, still holding their hostages, were offered safe passage and taken to an airport, where they were ambushed by German security forces. In the firefight that followed, 15 people, including the nine Israeli athletes and five of the terrorists, were killed. After much debate, it was decided that the Games would continue, but proceedings were obviously dominated by these events. Some memorable athletic achievements did occur during these Games, notably the winning of a then-record seven gold medals by United States swimmer Mark Spitz, Lasse Virén (of Finland)'s back-to-back gold in the 5,000 meters and 10,000 meters (defeating American distance running great Steve Prefontaine in the former), and the winning of three gold medals by Soviet gymnastic star Olga Korbut - who achieved a historic backflip off the high bar. Korbut, however, failed to win the all-around, losing to her teammate Ludmilla Tourischeva.
There was no such tragedy in Montreal in 1976, but bad planning and fraud led to the Games' cost far exceeding the budget. The Montreal Games were the most expensive in Olympic history, until the 2014 Winter Olympics, costing over $5 billion (equivalent to $21.45 billion in 2018). For a time, it seemed that the Olympics might no longer be a viable financial proposition. In retrospect, the belief that contractors (suspected of being members of the Montreal Mafia) skimmed large sums of money from all levels of contracts while also profiting from the substitution of cheaper building materials of lesser quality, may have contributed to the delays, poor construction and excessive costs. In 1988, one such contractor, Giuseppe Zappia "was cleared of fraud charges that resulted from his work on Olympic facilities after two key witnesses died before testifying at his trial." There was also a boycott by African nations to protest against a recent tour of apartheid-run South Africa by the New Zealand national rugby union team. The Romanian gymnast Nadia Comăneci won the women's individual all-around gold medal with two of four possible perfect scores, this giving birth to a gymnastics dynasty in Romania. She also won two other individual events, with two perfect scores in the balance beam and all perfect scores in the uneven bars. Lasse Virén repeated his double gold in the 5,000 meters and 10,000 meters, making him the first athlete to ever win the distance double twice.
Following the Soviet Union's 1979 invasion of Afghanistan, 66 nations, including the United States, Canada, West Germany, and Japan, boycotted the 1980 games held in Moscow. Eighty nations were represented at the Moscow Games – the smallest num