Melbourne march from the University of Melbourne to Parliament House to achieve an eight-hour day. 1894 – Norway formally adopts the Krag–Jørgensen bolt-action rifle as the main arm of its armed forces, a weapon that would remain in service for almost 50 years. 1898 – Spanish–American War: The United States Navy begins a blockade of Cuban ports. When the U.S. Congress issued a declaration of war on April 25, it declared that a state of war had existed from this date. 1901–present 1914 – Ypiranga incident: A German arms shipment to Mexico is intercepted by the U.S. Navy near Veracruz. 1918 – World War I: German fighter ace Manfred von Richthofen, better known as "The Red Baron", is shot down and killed over Vaux-sur-Somme in France. 1926 – Al-Baqi cemetery, former site of the mausoleum of four Shi'a Imams, is leveled to the ground by Wahhabis. 1934 – The "Surgeon's Photograph", the most famous photo allegedly showing the Loch Ness Monster, is published in the Daily Mail (in 1994, it is revealed to be a hoax). 1945 – World War II: Soviet forces south of Berlin at Zossen attack the German High Command headquarters. 1948 – United Nations Security Council Resolution 47 relating to Kashmir conflict is adopted. 1952 – Secretary's Day (now Administrative Professionals' Day) is first celebrated. 1958 – United Airlines Flight 736 collides with a United States Air Force fighter jet near Arden, Nevada in what is now Enterprise, Nevada. 1960 – Brasília, Brazil's capital, is officially inaugurated. At 09:30, the Three Powers of the Republic are simultaneously transferred from the old capital, Rio de Janeiro. 1962 – The Seattle World's Fair (Century 21 Exposition) opens. It is the first World's Fair in the United States since World War II. 1963 – The first election of the Universal House of Justice is held, marking its establishment as the supreme governing institution of the Baháʼí Faith. 1964 – A Transit-5bn satellite fails to reach orbit after launch; as it re-enters the atmosphere, of radioactive plutonium in its SNAP RTG power source is widely dispersed. 1965 – The 1964–1965 New York World's Fair opens for its second and final season. 1966 – Rastafari movement: Haile Selassie of Ethiopia visits Jamaica, an event now celebrated as Grounation Day. 1967 – A few days before the general election in Greece, Colonel George Papadopoulos leads a coup d'état, establishing a military regime