Playwright Christopher Marlowe, 29, is killed in a brawl over a bar tab on this day.

By proclamation of General John A. Logan of the Grand Army of the Republic, the first major Memorial Day observance is held to honor those who died “in defense of their country during the late rebellion.” Known to some as “Decoration Day,” mourners honored the Civil War dead by decorating their graves with flowers. On the first Decoration Day, May 30, 1868, General James Garfield made a speech at Arlington National Cemetery, after which 5,000 participants helped to decorate the graves of the more than 20,000 Civil War soldiers buried in the cemetery.

On May 30, 1911, Ray Harroun drives his single-seater Marmon Wasp to victory in the inaugural Indianapolis 500, now one of the world’s most famous motor racing competitions.

On May 30, 1913, a peace treaty is signed ending the First Balkan War, in which the newly aligned Slavic nations of Serbia, Montenegro, Bulgaria and Greece had driven Turkish forces out of Macedonia, a territory of the Ottoman Empire located in the tumultuous Balkans region of southeastern Europe.

On May 30, 1922, President Warren G. Harding becomes the first president to have his voice transmitted by radio while addressing a crowd at the dedication of the Lincoln Memorial. The broadcast heralded a revolutionary shift in how presidents addressed the American public. It was not until three years later, however, that a president would deliver a radio-specific address. That honor went to President Calvin Coolidge.

On May 30, 1942, Fred Korematsu is arrested in San Leandro, California for resisting internment under President Franklin Roosevelt’s controversial Executive Order 9066, which called for the incarceration of nearly all Japanese Americans in the United States in the wake of Japan’s attack on Pearl Harbor.

On May 30, 1943, the extermination camp at Auschwitz, Poland, receives a new doctor, 32-year-old Josef Mengele, a man who will earn the nickname “the Angel of Death.”

After suffering through years of suppression under Nigeria’s military government, the breakaway state of Biafra proclaims its independence from Nigeria.

Soviet leader Mikhail Gorbachev arrives in Washington, D.C., for three days of talks with President George Bush. The summit meeting centered on the issue of Germany and its place in a changing Europe.

Jonathan Levin, a popular 31-year-old English teacher, is stabbed and shot to death in his Upper West Side apartment in New York City. The son of Time Warner chairman Gerald Levin, Jonathan was known by many to be wealthy. When he did not show up for work, investigators searched his apartment and found his lifeless body bound to a chair with duct tape. Levin’s bankcard was missing from his wallet, and $800 had been removed from his account around the time that he was killed.