Chuschi, Ayacucho. May 18 – The 1980 eruption of Mount St. Helens volcano in Washington (state) kills 57 and causes US$3 billion in damage. May 18 – 27 – Gwangju Uprising: Students in Gwangju, South Korea, begin demonstrations, calling for democratic reforms. May 20 – 1980 Quebec referendum: Voters in Quebec reject by a vote of 60%, a proposal to seek independence from Canada. May 22 – Pac-Man, the highest-earning arcade game of all time, is released in Japan. May 24 The International Court of Justice calls for the release of U.S. Embassy hostages in Tehran. The New York Islanders win their first Stanley Cup, on a goal by Bobby Nystrom in Game 6 overtime of the 1980 Stanley Cup Finals over the Philadelphia Flyers. May 25 – Indianapolis 500: Johnny Rutherford wins for a third time in car owner Jim Hall's revolutionary ground effect Chaparral car; the victory is Hall's second as an owner. May 26 John Frum supporters in Vanuatu storm government offices on the island of Tanna. Vanuatu government troops land the next day and drive them away. In South Korea, military government forces and pro-democracy protesters clash; 2,000 protesters die. May 28 – A fiery bus crash near the small village of Webb, Saskatchewan, Canada, claims 22 lives. June June 1 – The first 24-hour news channel, Cable News Network (CNN) is launched. June 3 – 1980 Grand Island tornado outbreak: A series of deadly tornadoes strikes Grand Island, Nebraska, causing over $300m in damage, killing five people and injuring over 250. June 10 – Apartheid: The African National Congress in South Africa publishes a statement by their imprisoned leader Nelson Mandela. June 23 – September 6 – The 1980 United States heat wave claims 1,700 lives. June 23 Sanjay Gandhi, the politically influential son of prime minister Indira Gandhi, is killed in a plane crash. Tim Berners-Lee begins work on ENQUIRE, the system that will eventually lead to the creation of the World Wide Web in autumn 1990. June 25 – A Muslim Brotherhood assassination attempt against Syrian president Hafez al-Assad fails. Assad retaliates by sending the army against them. June 27 Itavia Flight 870 crashes into the sea near Ustica island, Italy, killing all 81 people on board. The cause of the accident remains unclear. U.S. President Jimmy Carter signs Proclamation 4771, requiring 18- to 25-year-old males to register for a peacetime military draft,