abroad. September 28 – Cardinal József Mindszenty, who has taken refuge in the U.S. Embassy in Budapest since 1956, is allowed to leave Hungary. September 29 – A cyclone in the Bay of Bengal, in the Indian state of Odisha, kills 10,000. October October 1 – Walt Disney World opens in Orlando, Florida. October 4–7 – Pink Floyd record their groundbreaking film, Pink Floyd: Live at Pompeii at the Amphitheatre of Pompeii. October 13 – The Pittsburgh Pirates defeat the Baltimore Orioles 4–3 in Game 4 of the World Series at home in the first ever Major League Baseball postseason game played at night. The Pirates defeat the Orioles 2–1 in the decisive Game 7 at Baltimore four days later. October 14 – Greenpeace is founded in Vancouver, British Columbia, Canada. October 17 – The Pittsburgh Pirates defeat the Baltimore Orioles to win the 1971 World Series. October 18 – In New York City, the Knapp Commission begins public hearings on police corruption. October 21 U.S. President Richard Nixon nominates Lewis Franklin Powell Jr. and William H. Rehnquist to the U.S. Supreme Court. The Clarkston explosion in Scotland, caused by a gas leak, kills 22 people. October 24 – Texas Stadium opens in Irving, Texas. In the inaugural game, the host Dallas Cowboys defeat the New England Patriots 44–21. October 25 – The United Nations General Assembly admits the People's Republic of China and expels the Republic of China (or Taiwan). October 27 – The Democratic Republic of the Congo is renamed Zaire. October 28 The House of Commons of the United Kingdom votes 356–244 in favour of joining the European Economic Community. The United Kingdom becomes the sixth nation successfully to launch a satellite into orbit using its own launch vehicle, the Prospero (X-3) experimental communications satellite, using a Black Arrow carrier rocket from Woomera, South Australia. The Khedivial Opera House in Cairo, Egypt, burns down. October 29 – Vietnam War – Vietnamization: The total number of American troops still in Vietnam drops to a record low of 196,700 (the lowest since January 1966). October 30 – Rev. Ian Paisley founds the Democratic Unionist Party in Northern Ireland. October 31 A bomb explodes at the top of the Post Office Tower in London. Meddle, the critically acclaimed album by progressive rock band Pink Floyd, is released. November Erin Pizzey establishes the world's first domestic violence shelter in Chiswick, London.