On April 28

The 1,388-foot-tall (423.2 m) Trump International Hotel and Tower in Chicago, with the world's highest residence above ground level at the time, held its grand opening.

A 14-year-old former student in Taber, Alberta, opened fire at his high school, killing one student and wounding another in Canada's first fatal school shooting in more than two decades.

Aloha Airlines Flight 243 experienced explosive decompression while airborne between Hilo and Honolulu, Hawaii, with one fatality as a flight attendant was ejected from the aircraft.

The West German news magazine Stern published excerpts from the purported diaries of Adolf Hitler, later revealed to be forgeries.

The album The Dark Side of the Moon by the British progressive rock band Pink Floyd entered the Billboard Top LPs & Tape chart, on which it spent a record 942 weeks.

Scottish trade unionist Jimmy Reid condemned the capitalist "rat race" in his inaugural address as Rector of the University of Glasgow.

The Sibley Commission issued their final report, urging the government of the U.S. state of Georgia to abandon its strategy of massive resistance and legalize some instances of school integration.

Japan and the Republic of China signed the Treaty of Taipei, officially ending the Second Sino-Japanese War seven years after fighting ended due to World War II.

World War II: Benito Mussolini, the deposed fascist dictator of Italy, was executed by partisans in Giulino.

World War II: Presaging a campaign of genocide against the Serbs of Croatia, around 190 people were massacred by members of the Ustaše movement in Gudovac.

The FA Cup final (crowd and police pictured) between Bolton Wanderers and West Ham United was held on the opening day of the Empire Stadium in London.

Frenchman Louis Paulhan landed his biplane at Manchester (pictured), having departed from London the previous day, to win the world's first long-distance air race

A week after being arrested by the Prussian Secret Police, French police inspector Guillaume Schnaebelé (pictured) was released on the order of William I, German Emperor, defusing a possible war.

Fletcher Christian, the acting lieutenant on board the Royal Navy ship Bounty, led a mutiny against the commander William Bligh in the South Pacific.

Second Anglo-Mysore War: British troops surrendered the fortress of Bednore in southwestern India to French and Mysorean forces; many of the prisoners were later murdered.

The University of Santo Tomas in Manila, one of the oldest existing universities in Asia and one of the world's largest Catholic universities by enrollment, was founded.

The Japanese monk Nichiren declared the mantra Namu Myōhō Renge Kyō, now a central part of Nichiren Buddhism.

The ancient Iranian Parthian Empire fell to the Sasanids after its forces were defeated at the Battle of Hormozdgan.