Children receive food at a soup kitchen.

U.S. President Barack Obama delivers a speech on health care reform in the East Room of the White House.

Hurricane Katrina's storm surge completely floods a city highway, nearly to the top of the traffic signs.

Astronauts Neil Armstrong and Buzz Aldrin place the United States flag on the moon.

Afghan troops during battle with insurgents, Afghanistan; 28 January 2010

'Bring our GI's home' sign, zoom out to crowds at anti-war demo, USA; 1967

Track right around black smoke billowing out of devastated Alfred P. Murrah Federal Building after Oklahoma City Bomb; 19 Apr 95

Presidential candidate Bill Clinton on march with pro-choice demonstrators, Washington DC; 05 Apr 92

Homosexual rights protestors holding signs on march, Philadelphia; 09 Jul 67

Candles lifted in unison during AIDS vigil, Washington DC; 10 Oct 92

SWAT team enter Columbine High School following multiple shootings by two students, Littleton, Colorado; 20 Apr 99

1930s: THE GREAT DEPRESSION: VS EXT Men standing outside eating sandwiches, INT Men on food line w/ plates. EXT HA MS Soup being served in cups. WS Woman pushing bread cart past group of men. MCU Hand ladling soup into bucket. WS Group of people on line. MS Woman using spoon to scoop out food from bucket.

Former White House Press Secretary James Brady and his wife Sarah meet with President Bill Clinton in the Oval Office following passage of the Brady Bill in the Senate.

Police arrest a protester during an anti-war demonstration held near the 1968 Democratic National Convention.

Huge crowds cheer wildly outside the White House to celebrate Japan's surrender, ending World War II.

John Lennon and Yoko Ono announce that they will fight an INS deportation order.

O.J. Simpson and Johnnie Cochran react with relief as the not guilty verdict is read in court.

A distraught Columbine High School student tells gives her account of the shootings.

The last Twin Tower collapses in a cloud of billowing smoke on 9 11.

United States Army General David Petraeus testifies to a joint hearing of congress saying he believes the United States will be able to reduce troop numbers in Iraq by the summer of 2008.

Crowds of young people swarm Max Yasgur's farm in Bethel, New York, for the 1969 Woodstock Music and Art Fair.

Lawyer Gloria Allred clasps hands with Norma Jane Roe Mccorvey at a pro-abortion rally.

Former Catholic Priest John Geoghan listens as he is found guilty of sexual abuse in a Boston courtroom.

Unemployed workers try to find jobs during the Great Depression.

National Guard troops hand out supplies to Katrina victims in New Orleans.