May Day is a public holiday usually celebrated on 1 May or the first Monday
of May. It is an ancient festival of Spring and a current traditional spring
holiday in many European cultures. Dances, singing, and cake are usually
part of the festivities.   

President Barack Obama (above) announces the death of Usama bin Laden during a U.S. commando operation in Pakistan. (Because of
the time difference, it was May 2 in Pakistan when the Al Qaeda
leader met his demise and was quickly buried at sea.)