June 25 – Wilmersdorfer Tennishallen delegates convene in Berlin to protest against the persecution of Jehovah's Witnesses in Nazi Germany. June 26 – The American Totalisator Company unveils its first electronic pari-mutuel betting machine, at the Arlington Park race track near Chicago and the founding of 20th Century Pictures. July July 1 The London Passenger Transport Board begins operation. Business Plot: Smedley Butler becomes involved in a coup attempt led by Gerald MacGuire against President of the United States Franklin Delano Roosevelt which fails (according to his own testimony in 1934). July 4 – Gandhi is sentenced to prison in India. July 6 – The first Major League Baseball All-Star Game is played at Comiskey Park in Chicago. July 8 – The first rugby union test match is played between the Wallabies of Australia and the Springboks of South Africa, at Newlands in Cape Town. July 14 – In Nazi Germany: Formation of new political parties is forbidden. The Law for the Prevention of Hereditarily Diseased Offspring is enacted, allowing compulsory sterilization of citizens suffering from a list of alleged genetic disorders. July 15 The Four-Power Pact is signed by Britain, France, Germany and Italy. The International Left Opposition (ILO) is renamed the International Communist League (ICL). July 20 – Reichskonkordat: Vatican state secretary Eugenio Pacelli (later Pope Pius XII) signs an accord with Germany. July 22 Wiley Post becomes the first person to fly solo around the world, landing at Floyd Bennett Field in Brooklyn, New York, after traveling eastabout in 7 days 18 hours 45 minutes. "Machine Gun Kelly" and Albert Bates kidnap Charles Urschel, an Oklahoma oilman, and demand $200,000 ransom. August August 1 – The Blue Eagle emblem of the National Recovery Administration in the United States is displayed publicly for the first time. August 2 – The Stalin White Sea–Baltic Canal, a 227 km ship canal constructed using forced labour in the Soviet Union, opens, connecting the White Sea with Lake Onega and the Baltic. August 7 – Simele massacre: More than 3,000 Assyrian Iraqis are killed by Iraqi government troops. August 12 – Winston Churchill makes his first speech publicly warning of the dangers of German rearmament. August 14 – Loggers cause a forest fire in the Coast Range of Oregon, later known as the first forest fire of the Tillamook Burn. It is extinguished on September 5, after destroying . August 25 –