Rallies are held throughout the United States demanding the eight-hour work day culminating in the Haymarket Affair.
The All-China Federation of Trade Unions is officially founded. Today it is the largest trade union in the world, with 134 million members.
The Democratic People’s Republic of Korea (North Korea) is established, with Kim Il-sung as leader.
Cold War: U-2 incident Francis Gary Powers, in a Lockheed U-2 spyplane, is shot down over the Soviet Union, sparking a diplomatic crisis.
The Prime Minister of Cuba, Fidel Castro, proclaims Cuba a socialist nation and abolishes elections.
Battle of Dong-Yin, a naval conflict between ROC and PRC, takes place.
Barack Obama announces that Osama bin Laden, the suspected mastermind behind the September 11 attacks is killed by United States special forces in Abbottabad, Pakistan. Due to the time difference between the United States and Pakistan, bin Laden was actually killed on May 2.