Revelers, holding placards in support of both US President Barack Obama and former President George W. Bush, cheer outside the White House in Washington late May 1, 2011, after US President Barack Obama announced live on television the death of Osama bin Laden. [Photo/Agencies]

Revelers drive through the streets of Washington waving a US flag after US President Barack Obama announced live on television the death of Osama bin Laden, May 1, 2011. [Photo/Agencies]