May 30, 1868 – The first national observance of Memorial Day (originally known as Decoration Day) is inspired by Commander in Chief John A. Logan of the Grand Army of the Republic for the purpose of honoring Union soldiers who died in the Civil War. It is now observed on the last Monday of May as a federal holiday for mourning all military personnel who have died while serving in the United States armed forces.
May 30, 1922 – The Lincoln Memorial is dedicated featuring the compelling statue of a “seated” Lincoln along with carved inscriptions of his Gettysburg address and second inaugural address.
June 3, 1937 – The Duke of Windsor marries twice-divorced American socialite Wallis Simpson (as King Edward VIII he abdicated the British throne the previous December to avoid a constitutional crisis by marrying a divorced woman).
June 4, 1989 – The Chinese government ordered troops to open fire on unarmed protesters in Tienanmen Square, Beijing, with an estimated 3,000 killed and 1,600 arrested.