On this day, Sept. 5 ...

1972: The Munich Massacre: The Palestinian group Black September attacks the Israeli Olympic delegation at the Summer Olympics in Munich; 11 Israelis, five guerrillas and a police officer are killed in a siege.

Also on this day ...

1698: Russia's Peter the Great levies a tax on bearded men.

Russia's Peter the Great levies a tax on bearded men. 1774: The first Continental Congress assembles in Philadelphia.

The first Continental Congress assembles in Philadelphia. 1882: The nation's first Labor Day is celebrated with a parade in New York City.

The nation's first Labor Day is celebrated with a parade in New York City. 1905: The Treaty of Portsmouth, which ends the Russo-Japanese War, is signed at the Portsmouth naval base in New Hampshire.

The Treaty of Portsmouth, which ends the Russo-Japanese War, is signed at the Portsmouth naval base in New Hampshire. 1960: At the Summer Olympics in Rome, Cassius Clay (later Muhammad Ali) defeats Zbigniew Pietrzykowski of Poland to win the light-heavyweight gold medal for the United States; Wilma Rudolph wins the second of her three gold medals with the 200-meter sprint.

At the Summer Olympics in Rome, Cassius Clay (later Muhammad Ali) defeats Zbigniew Pietrzykowski of Poland to win the light-heavyweight gold medal for the United States; Wilma Rudolph wins the second of her three gold medals with the 200-meter sprint. 1961: President John F. Kennedy signs legislation making aircraft hijackings a federal crime.

President John F. Kennedy signs legislation making aircraft hijackings a federal crime. 1975: President Gerald R. Ford escapes an attempt on his life by Lynette "Squeaky" Fromme, a disciple of Charles Manson, in Sacramento, Calif.

President Gerald R. Ford escapes an attempt on his life by Lynette "Squeaky" Fromme, a disciple of Charles Manson, in Sacramento, Calif. 1984: The space shuttle Discovery ends its inaugural flight as it lands at Edwards Air Force Base in California.