Inauguration day crowds for Barack Obama

People wrapped in blankets wait before dawn at a security check point in Washington, DC, for Barack Obama's inauguration as president of the United States Photograph: Carolyn Kaster/AP

Crowds of people make their way to Washington on the Metro train system Photograph: Mitch Dumke/Reuters

A family from Virginia try to stay warm as they wait on the National Mall Photograph: Mark Ralston/AFP/Getty Images

A spectator watches as people file on to the inaugural stage Photograph: Reuters

People sit waiting for the inauguration ceremony, the 56th US presidential inauguration Photograph: Justin Sullivan/Getty Images

Crowds fill the National Mall Photograph: Kim Ludbrook/EPA

Crowds fill the National Mall prior to the start of the inauguration Photograph: Kim Ludbrook/EPA

Crowds fill the National Mall Photograph: Kim Ludbrook/EPA

MacDonald Chaaba of Virginia stands beneath the Washington monument on the National Mall Photograph: Chris Usher/EPA

Crowds of media prepare to cover the inauguration Photograph: Chip Somodevilla/Getty Images

Soldiers and medical staff prepare to evacuate a sick woman from the crowd on the National Mall Photograph: Mark Ralston/AFP/Getty Images

Attendees wait for the inauguration Photograph: Susan Walsh/AP

Obama arrives at his inauguration Photograph: Win McNamee/EPA

Obama is sworn in as president Photograph: Jason Reed/Reuters

Shaine Martin of New Orleans waits on the National Mall Photograph: Carolyn Kaster/AP

Students from Connecticut sleep before the inauguration Photograph: Mario Tama/Getty Images