a heart attack. The political party Partido de la Liberación Dominicana (PLD), which would later dominate the Dominican Republic, was founded by former president Juan Bosch. By 1996, Leonel Fernández would become the first PLD member to be elected president. The bicentennial of the Boston Tea Party of 1773 was celebrated in Boston. In a scheduled presentation, a group of men in colonial period costuming climbed aboard the replica ship Beaver II and tossed crates labeled 'Tea" into the harbor. A few minutes later, an unscheduled protest followed as a group of people calling themselves the "People's Bicentennial Commission" boarded the same ship and tossed empty oil barrels overboard. Died: Sid Barnes, 57, Australian cricketer and batsman with 163 caps for the Australian national side, was found dead of an overdose of barbiturate. December 17, 1973 (Monday) Palestinian terrorists killed 32 people after seizing the terminal building at the Leonardo da Vinci Airport near Rome, then throwing grenades through the open doors of a Pan American Boeing 707 which had 177 people on board. Pan Am Flight 110 had been preparing to taxi for departure. Two of the civilian deaths took place inside the airport terminal. Another group of five gunmen stormed a Lufthansa Boeing 737, bringing aboard 10 hostages and also taking hostage the crew of four. Canada and Denmark signed a treaty delimiting the division of their territorial waters between Canada's northernmost region (Ellesmere Island, now part of the Canadian Territory of Nunavut) and Greenland, now a self-governing Danish "constituent country". The treaty did not resolve the claims by both Canada and Denmark to the uninhabited Hans Island. The Woody Allen film Sleeper, a satire film starring Allen as a cryogenically frozen man waking up in the year 2173, premiered with a screening in the United States. The British Broadcasting Company introduced "Radio Scotland" on its BBC Radio 4 station, initially as an hourly news segment and "a two-hour current affairs programme" every morning. The success of the program would lead to the founding of BBC Radio Scotland as a full-time network on November 23, 1978. Born: Rian Johnson, American filmmaker known for directing Star Wars: The Last Jedi in 2017; in Silver Spring, Maryland Paula Radcliffe, English long-distance runner and three-time winner of the women's division of the London Marathon (2002,2003, 2005) and of the New York Marathon (2004, 2007, 2008); in Davenham, Cheshire Martha Érika Alonso,