Sen. John Ensign, R-Nev., announced he would step down amid a developing ethics probe while insisting he'd done nothing wrong.
Five suicide attackers detonated car bombs against police buildings in Basra, Iraq, killing at least 74 people.
Terrorist incidents in Iraq in 2004
The ashes of Timothy Leary, Gene Roddenberry, and 22 others blasted into space for the first space funerals.
Timothy McVeigh was arrested in connection with the Oklahoma City bombing.
Oklahoma City bombing
Robert Alton Harris became the first person executed by the state of California in 25 years as he was put to death in the gas chamber for the 1978 murder of two teenage boys.
Robert Alton Harris
Thousands of Chinese crowd into Beijing's Tiananmen Square cheering students demanding greater political freedom.
2008 Summer Olympics torch relay
Rosie Ruiz, the first woman to cross the finish line at the Boston Marathon, was disqualified when officials discovered she had jumped into the race about a mile from the finish.
The musical "Annie," based on the comic strip "Little Orphan Annie," opened on Broadway.
South Vietnamese President Nguyen Van Thieu resigned.
Nguyễn Văn Thiệu
Dictator Georgios Papadopoulos assumes power in Greece. During his six-year reign, thousands of political opponents were incarcerated and tortured.
Brazil inaugurated its new capital, Brasilia, transferring the seat of national government from Rio de Janeiro.
Capitals of Brazil
The Surgeon's photo, allegedly showing the Loch Ness Monster, is published in the Daily Mail. In reality, the famous image depicts a toy submarine with a head and neck made of wood putty.
Loch Ness Monster
The Red Baron is killed. Manfred von Richthofen was a legendary German fighter pilot. He earned his renown and nickname by achieving 80 air combat victories in World War I. He was shot down and killed during combat at the age of 25.
Manfred von Richthofen
Samuel Clemens (Mark Twain), author of the novel Huckleberry Finn, died at the age of 74.
Bahá'u'lláh, founder of the Bahá'í Faith, enters gardens of Rivden, near Baghdad. Makes the declaration of aha'u'llah during 12 days spent there.
Texans led by Sam Houston defeated the Mexicans at San Jacinto, assuring Texas' independence.
Charlotte Bronte, author of "Jane Eyre," was born in Thornton, England.
Brazilian revolutionary Tiradentes, is hanged, drawn and quartered in Rio de Janeiro.
John Adams was sworn in as the first vice president of the United States.
First inauguration of George Washington
The Maryland Toleration Act, which provided for freedom of worship for all Christians, was passed by the Maryland assembly.
Maryland Toleration Act
Battle at Panipat: Central Asian conqueror Babur defeats Sultan Ibrahim Lodi, establishing the Mughal Empire in India.
Henry VIII is crowned King of England. In popular culture, the monarch is known mainly for his six marriages, two of which ended with the wife's execution.
Henry VIII of England