The Wikipedia article of the day for June 24, 2019 is Shergar.
Shergar (1978–1983) was an Irish-bred, British-trained Thoroughbred racehorse. In 1981 Shergar ran in six races, winning five of them. In June that year he won the 202nd Epsom Derby by ten lengths—the longest winning margin in the race's history. Three weeks later he won the Irish Sweeps Derby by four lengths; a month after that he won the King George VI and Queen Elizabeth Stakes by four lengths. He was retired to the Ballymany Stud in County Kildare, Ireland, but was stolen by an armed gang in February 1983. In 1999 Sean O'Callaghan, a former member of the Provisional Irish Republican Army, published details of the theft and said it was an operation to raise money for arms. An investigation by The Sunday Telegraph concluded that the horse was shot four days after the theft. No arrests were made for the theft, and Shergar's body was never recovered. In his honour the Shergar Cup was inaugurated in 1999.