Baltic German nobility. October 11–November 18 – Russian Civil War, Southern Front: The Red army defeat the white army in the Orel–Kursk operation, recapturing the cities and stopping the white's offensive to Moscow. October 13 – The Convention relating to the Regulation of Aerial Navigation is signed, in Paris, France. October 13–November 16 – Russian Civil War, Southern Front: Using massive cavalry forces, The Red army threatened the flank of the white army in the Voronezh–Kastornoye operation (1919). October 16 In Germany, Adolf Hitler gives his first speech for the German Workers' Party (DAP). The historic Condado Vanderbilt Hotel is inaugurated, in San Juan, Puerto Rico. October 26 – 1919 Luxembourg general election, the first in the duchy with female suffrage, following constitutional amendments of May 15. October 28 – Prohibition in the United States: The United States Congress passes the Volstead Act, over President Woodrow Wilson's veto. Prohibition goes into effect on January 17, 1920, under the provisions of the 18th Amendment to the United States Constitution. November November 1 – The Coal Strike of 1919 begins in the United States, by the United Mine Workers under John L. Lewis; a final agreement is reached on December 10. November 7 The first of the Palmer Raids is conducted on the second anniversary of the Russian Revolution; over 10,000 suspected communists and anarchists are arrested in 23 different U.S. cities. Inspired by Cape Town's daily Noon Gun Three Minute Pause, King George V institutes the Two Minute Silence, following a suggestion by Sir Percy Fitzpatrick, to be observed annually at the Eleventh Hour of the Eleventh Day of the Eleventh Month. November 9 – Felix the Cat debuts in Feline Follies. November 10–12 – The first national convention of the American Legion is held in Minneapolis. November 10 – Abrams v. United States: The Supreme Court of the United States upholds the conviction Abrams for inciting resistance to the war effort against Soviet Russia. November 11 Russian Civil War: The Northwestern Army of General Nikolai Yudenich retreats to Estonia and is disarmed. The Centralia Massacre in Centralia, Washington (United States), originating at an Armistice Day parade, results in the deaths of four members of the American Legion and the lynching of a local leader of the Industrial Workers of the World (IWW). First Remembrance Day observed in the British Empire with a two-minute silence at 11:00 hours. November 14 –