Front allies capture Lira, Uganda, from the forces of Ugandan dictator Idi Amin. May 21 Dan White is convicted of manslaughter, rather than murder, for the assassination of San Francisco Mayor George Moscone and Supervisor Harvey Milk, after using what would become known as the "Twinkie defense" and persuading a jury that the crime was not premeditated. The maximum sentence is seven years imprisonment, with eligibility for early parole, prompting the "White Night riots" in the gay community. The Montreal Canadiens defeat the New York Rangers four games to one to win their fourth consecutive Stanley Cup. May 25 American Airlines Flight 191: In Chicago, a DC-10 crashes during takeoff at O'Hare International Airport, killing all 271 on board and 2 people on the ground in the deadliest aviation accident in U.S. history. John Spenkelink is executed in Florida, in the first use of the electric chair in America after the reintroduction of the death penalty in 1976. Etan Patz, 6 years old, is kidnapped in New York. He is often referred to as the "Boy on the Milk Carton" and the investigation later sprouts into one of the most famous child abduction cases of all time. This is a cold case until 2010 when it is re-opened. In April 2017, Pedro Hernandez is convicted of the murder and kidnapping and sentenced to life imprisonment. May 27 – Indianapolis 500: Rick Mears wins the race for the first time, and car owner Roger Penske for the second time. June June 1 The Vizianagaram district is formed in Andhra Pradesh, India. The first black-led government of Rhodesia in 90 years takes power, in succession to Ian Smith and under his power-sharing deal, in the unrecognized republic of Zimbabwe Rhodesia. The Seattle SuperSonics win the NBA Championship against the Washington Bullets. June 2 Pope John Paul II arrives in his native Poland on his first official, nine-day stay, becoming the first Pope to visit a Communist country. This visit, known as nine days that changed the world, brings about the solidarity of the Polish people against Communism, ultimately leading to the rise of the Solidarity movement. Los Angeles' city council passes the city's first homosexual rights bill signed without fanfare by mayor Tom Bradley. June 3 Ixtoc I oil spill: A blowout at the Ixtoc I oil well in the southern Gulf of Mexico causes at least 600,000 tons (176,400,000 gallons) of