Khanh had rival Generals Tran Van Don and Le Van Kim convicted of "lax morality". June June 2 Senator Barry Goldwater wins the California Republican primary, making him the overwhelming favorite for the party's nomination as President of the United States. Five million shares of stock in the Communications Satellite Corporation (Comsat) are offered for sale at $20 a share, and the issue is quickly sold out. June 3 – South Korean President Park Chung-hee declares martial law in Seoul, after 10,000 student demonstrators overpower police. June 11 Greece rejects direct talks with Turkey over Cyprus. Cologne school massacre: In Cologne, West Germany, Walter Seifert attacks students and teachers in an elementary school with a flamethrower, killing 10 and injuring 21. June 12 – Nelson Mandela and 7 others are sentenced to life imprisonment in South Africa, and sent to the Robben Island prison. June 14 - Kicking off the Civil Rights project known as Freedom Summer, 300 volunteers begin preparing for a summer in Mississippi. The training is held at the Western College for Women (now Miami University). June 19 – U.S. Senator Edward Kennedy, 32, is seriously injured in a private plane crash at Southampton, Massachusetts; the pilot is killed. June 20 – The Ford GT40 makes its first appearance at the 24 Hours of Le Mans. It does not see its first victory, however, until 2 years later in 1966. At the same event, the AC Cobra wins its class in its second Le Mans appearance. June 21 – Spain beats the Soviet Union 2–1 to win the 1964 European Nations Cup. June 26 – Moise Tshombe returns to the Democratic Republic of the Congo from exile in Spain. July July 6 – Malawi receives its independence from the United Kingdom. July 18 Six days of race riots begin in Harlem, New York, United States, apparently prompted by the shooting of a teenager. Judith Graham Pool publishes her discovery of cryoprecipitate, a frozen blood clotting product made from plasma primarily to treat hemophiliacs around the world. July 19 – Vietnam War: At a rally in Saigon, South Vietnamese Prime Minister and military leader Nguyễn Khánh calls for expanding the war into North Vietnam. July 20 Vietnam War: Viet Cong forces attack a provincial capital, killing 11 South Vietnamese military personnel and 40 civilians (30 of which are children). The National Movement of the Revolution is established in