Iranian President Mahmoud Ahmadinejad addresses tens of thousands of Iranians gathered in Azadi (Freedom) Square in Tehran to mark the 31st anniversary of the Islamic Revolution on Feb. 11, 2010. Ahmadinejad said Iran had produced a "first stock" of 20 percent enriched uranium for its nuclear program.
Atta Kenare/AFP/Getty Images
Then-House Speaker Newt Gingrich holds up a copy of the Republican Party's "Contract with America" during a rally to celebrate the first 50 days of the Republican majority in Congress in 1995.
Joshua Roberts/AFP/Getty Images
The Astronomer (Adrian Quesada remix)Graham Reynolds
Supporters of Mamata Banerjee rally in Calcutta wearing the Trinamool party colors and logo. The three-leaf-clover-like symbol represents leaves of grass and grass flowers, to suggest a grass-roots party.
Manny Pacquiao hits Shane Mosley in the seventh round of their WBO welterweight title fight at the MGM Grand Garden Arena in Las Vegas on May 7. Pacquiao retained his title with a unanimous-decision victory.
Ethan Miller/Getty Images