The Inaugural Parade begins along Pennsylvania Avenue following the second inauguration of U.S. President Barack Obama in Washington, D.C. (AFP)

Beyonce sings the U.S. National Anthem as President Barack Obama (R) and Senator Charles Schumer (D-NY) listen during swearing-in ceremonies on the West front of the U.S. Capitol in Washington, D.C. (Reuters)

President Barack Obama speaks at the ceremonial swearing-in at the U.S. Capitol during the 57th Presidential Inauguration in Washington, D.C. (AP)

U.S. President Barack Obama is sworn in by Supreme Court Chief of Justice John Roberts, as First Lady Michelle Obama looks on during inauguration ceremonies in Washington, D.C. (Reuters)

Dr. Bernice King, center right, and Christine King Farris, left, the daughter and sister of Dr. Martin Luther King Jr., applaud while watching a broadcast as President Barack Obama is inaugurated following the Dr. Martin Luther King Jr. holiday commemorative service at the Ebenezer Baptist Church, in Atlanta, Georgia. (AP)

Secret Service snipers walk on the plaza on the East front of the U.S. Capitol before the 57th inauguration ceremonies for US President Barack Obama and Vice President Joe Biden, in Washington, D.C. (Reuters)

Spectators react on the National Mall during the 57th inauguration ceremonies for U.S. President Barack Obama and Vice President Joe Biden on the West front of the U.S. Capitol, in Washington, D.C. (Reuters)

Security lines Pennsylvania Avenue in Washington, D.C., prior to the start of the 57th Presidential Inaugural Parade. (AP)

Austrian rescue personnel stand in front of two demolished S45 trains after a train crash in Vienna, Austria. (Reuters)

A hunter shelters under a bridge during a snow storm in the Glens of Antrim near Cargan, Northern Ireland. (Reuters)

Algerian firemen carry a coffin containing a person killed during the gas facility hostage situation, at the morgue in Ain Amenas, Algeria, (AP)

A NYPD officer leads demonstrators over the Brooklyn bridge toward downtown Manhattan during a One Million Moms for Gun Control Rally in New York. (AP)

Firefighters work at the site where a helicopter crashed into a residential area of Sao Paulo, Brazil. According to authorities, the pilot flying the private helicopter died, and three passengers were injured. (AP)

Models present creations by Belgian designer Raf Simons as part of the Haute Couture Spring-Summer 2013 fashion show for French house Dior in Paris, France. (Reuters)

A man stands next to a bronze sculpture of a baby, that has been painted white, titled ‘Planet’ by British artist Marc Quinn at Garden by the Bay in Singapore. (AFP)