On This Day in History

The Egyptian Armed Forces crossed the Suez Canal (pictured) to attack occupying Israeli forces at the Bar Lev Line in the Sinai Peninsula, beginning the Yom Kippur War.

Two bombs placed by the CIA-linked Cuban dissident group Coordination of United Revolutionary Organizations exploded on Cubana Flight 455, killing all 73 people aboard.

Egyptian president Anwar Sadat (pictured) was assassinated while attending a parade in Cairo to mark the eighth anniversary of the Crossing of the Bar Lev Line at the start of the 1973 Arab-Israeli War.

Police constable Keith Blakelock was killed during rioting in the Broadwater Farm housing estate in Tottenham, London.

About 200 members of the San Francisco Police Department instigated a police riot in the Castro following a peaceful protest held by the political group ACT UP.

Matthew Shepard, a gay college student, was attacked and fatally wounded near Laramie, Wyoming, U.S., dying six days later.

Denouncing corruption in Argentine president Fernando de la Rúa's administration and the Senate, Vice President Carlos Álvarez resigned.

Al-Qaeda bombed the oil tanker Limburg, causing oil to leak into the Gulf of Aden.

The MESSENGER probe discovered Mercury's Rembrandt (pictured) – the second largest impact crater on the planet.