30 – John Turner becomes the 17th Prime Minister of Canada. July July 1 Liechtenstein becomes the last country in Europe to grant women the right to vote. Argentinian footballer Diego Maradona is sold by FC Barcelona (Spain) to S.S.C. Napoli (Italy) for a world record fee at this date of $10.48M (£6.9M). July 14 – New Zealand Prime Minister Rob Muldoon calls a snap election and is defeated by opposition Labour leader David Lange. July 25 – Salyut 7: cosmonaut Svetlana Savitskaya becomes the first woman to perform a space walk. July 28–August 12 – The 1984 Summer Olympics are held in Los Angeles, California. August August 1 – Australian banks are deregulated. August 4 The African republic Upper Volta changes its name to Burkina Faso. reaches a record submergence depth of 1,020 meters. August 11 Barefoot South African runner Zola Budd, and Mary Decker of the U.S. collide in the Olympic 3,000 meters final, neither finishing as medallists. August 16 – John DeLorean is acquitted of all eight charges of possessing and distributing cocaine. August 21 – Half a million people in Manila demonstrate against the regime of Ferdinand Marcos. August 30 – STS-41-D: the Space Shuttle Discovery takes off on its maiden voyage. September September 2 – Seven people are shot and killed and 12 wounded in the Milperra massacre, a shootout between the rival motorcycle gangs Bandidos and Comancheros in Sydney, Australia. September 4 – The Progressive Conservative Party of Canada, led by Brian Mulroney, wins 211 seats in the House of Commons of Canada, forming the largest majority government in Canadian history. September 5 STS-41-D: the Space Shuttle Discovery lands after its maiden voyage at Edwards Air Force Base in California. Western Australia becomes the last Australian state to abolish capital punishment. September 7 – An explosion on board a Maltese patrol boat disposing illegal fireworks at sea off Gozo kills seven soldiers and policemen. September 14 – P. W. Botha is inaugurated as the first executive State President of South Africa. September 14 – Joe Kittinger becomes the first person to fly a gas balloon alone across the Atlantic Ocean. September 16 – Edgar Reitz's film series Heimat begins release in Germany. September 17 – Brian Mulroney is sworn in as Prime Minister of Canada. September 18 – Joe Kittinger becomes the first person to cross the Atlantic, solo, in a hot air balloon.