Question: When was the early prominent German Nazi official and politician born who was murdered during the Night of the Long Knives and who stars as Gregor Strasser in  Hitler (1962)? 

Context paragraphs:
Censorship in Nazi Germany: Censorship in Nazi Germany was extreme and strictly enforced by the governing Nazi Party, but specifically by Joseph Goebbels and his Reich Ministry of Public Enlightenment and Propaganda.  The same body also produced and disseminated their own literature which were solely devoted to furthering nazi ideas and myths.  Anti-semitism lay at the core of their works, and included films such as Jud Süß (1940 film) and The Eternal Jew (1940 film).  The ministry promoted the cult of Adolf Hitler by sponsoring early films such as Triumph of the Will of the 1934 rally and The Victory of Faith made in 1933 (and which survives now as a single copy recently discovered in the UK.  It was banned by the nazis owing to the prominent role of Ernst Roehm, who was murdered by Hitler on the Night of the Long Knives in 1934.

Adalbert Probst: Adalbert Probst (1900 - 1934) was a Catholic Youth leader in Germany during Nazi period.  He was killed during Hitler's 1934 Night of the Long Knives purge.  Probst was national director of the Catholic Youth Sports Association.  The Catholic Church in Germany had resisted attempts by the new Nazi Government to close its youth organisations.  Probst, along with Erich Klausener (head of Catholic Action) and Fritz Gerlich (editor of Munich's Catholic weekly, "Der Gerade Weg") were among the high-profile Catholic opposition figures targeted for assassination in the Night of the Long Knives of the summer of 1934, an early effort by Hitler to assert his dominance of German politics through violence.  Probst was abducted and later found dead, allegedly "shot while trying to escape".

Night of the Long Knives: The Night of the Long Knives (German:    ), also called Operation Hummingbird (German: "Unternehmen Kolibri") or, in Germany, the Röhm Putsch (German spelling: "Röhm-Putsch" ), was a purge that took place in Nazi Germany from June 30 to July 2, 1934, when the Nazi regime carried out a series of political extrajudicial executions intended to consolidate Hitler's absolute hold on power in Germany.  Many of those killed were leaders of the "Sturmabteilung" (SA), the Nazis' own paramilitary organization, colloquially known as the "Brownshirts" due to the color of their uniforms.  The best-known victim of the purge was Ernst Röhm, the SA's leader and one of Hitler's longtime supporters and allies.  Leading members of the left-wing Strasserist faction of the Nazi Party (NSDAP), along with its figurehead, Gregor Strasser, were also killed, as were establishment conservatives and anti-Nazis, such as former Chancellor Kurt von Schleicher and Bavarian politician Gustav Ritter von Kahr, who had suppressed Adolf Hitler's Munich Beer Hall Putsch in 1923.  The murders of SA leaders were also intended to improve the image of the Hitler government with a German public that was increasingly critical of thuggish Brownshirt tactics.

Hitler (1962 film): Hitler (1962) is a black and white American film (that was later re-released with the title, "Women of Nazi Germany").  The film stars Richard Basehart in the title role of Adolf Hitler.  Cordula Trantow stars as Geli Raubal and Maria Emo as Eva Braun.  John Banner stars as Gregor Strasser.  The film depicts Hitler through the years, beginning with the Beer Hall Putsch of November 1923 and focuses mainly on his private life, in particular, his relationships with niece Geli and longtime companion/wife, Eva Braun.  According to film critic and historian Leonard Maltin, Basehart "gives a cerebral interpretation" of Hitler during the timeframe he was the leader of Nazi Germany.  For her performance, Cordula Trantow was nominated for a 1962 Golden Globe in the category: Most Promising Newcomer - Female.  The film was produced by Three Crown Productions, Inc. and distributed by Allied Artists Pictures.

Ernst Röhm: Ernst Julius Günther Röhm (] ; 28 November 1887 – 1 July 1934) was a German military officer and an early member of the Nazi Party.  As one of the members of its predecessor, the German Workers' Party, he was a close friend and early ally of Adolf Hitler and a co-founder of the "Sturmabteilung " (SA, "Storm Battalion"), the Nazi Party's militia, and later was its commander.  By 1934, the German Army feared the SA's influence and Hitler had come to see Röhm as a potential rival, so he was executed during the Night of the Long Knives.

Night of the Long Knives (1962): In British politics, the "Night of the Long Knives" was a major Cabinet reshuffle that took place on 13 July 1962.  Prime Minister Harold Macmillan dismissed seven members of his Cabinet, one-third of the total.  The speed and scale of the reshuffle caused it to be associated by its critics with the 1934 Night of the Long Knives in Nazi Germany.

Triumph of the Will: Triumph of the Will (German: Triumph des Willens ) is a 1935 German propaganda film directed, produced, edited, and co-written by Leni Riefenstahl.  It chronicles the 1934 Nazi Party Congress in Nuremberg, which was attended by more than 700,000 Nazi supporters.  The film contains excerpts from speeches given by Nazi leaders at the Congress, including Adolf Hitler, Rudolf Hess and Julius Streicher, interspersed with footage of massed Sturmabteilung (SA) and Schutzstaffel (SS) troops and public reaction.  Hitler commissioned the film and served as an unofficial executive producer; his name appears in the opening titles.  The film's overriding theme is the return of Germany as a great power, with Hitler as the leader who will bring glory to the nation.  Because the film was made after the 1934 Night of the Long Knives (on 30 June) many prominent Sturmabteilung (SA) members are absent—they were murdered in that Party purge, organised and orchestrated by Hitler to replace the SA with the Schutzstaffel (SS) as his main paramilitary force.

Gregor Strasser: Gregor Strasser (also German: "Straßer" , see ß; 31 May 1892 – 30 June 1934) was an early prominent German Nazi official and politician who was murdered during the Night of the Long Knives in 1934.

Kurt von Schleicher: Kurt Ferdinand Friedrich Hermann von Schleicher (   ; 7 April 1882 – 30 June 1934) was a German general and the last Chancellor of Germany during the era of the Weimar Republic.  An important player in the German Army's efforts to avoid the restrictions of the Treaty of Versailles, Schleicher rose to power as a close advisor to President Paul von Hindenburg.  In 1930 he was instrumental in the toppling of Hermann Müller's government and the appointment of Heinrich Brüning as Chancellor.  From 1932 he served as Minister of War in the cabinet of Franz von Papen, whom he succeeded as Chancellor on 3 December.  During his brief term, Schleicher negotiated with Gregor Strasser on a possible secession of the latter from the Nazi Party but their scheme failed.  The Chancellor then proposed to President Hindenburg to disperse the Reichstag and rule as a de facto dictator, a course of action Hindenburg rejected.  On 28 January 1933, facing a political impasse and deteriorating health, Schleicher resigned and recommended the appointment of Adolf Hitler in his stead.  Seventeen months afterwards he was murdered on the orders of Hitler during the Night of the Long Knives.

Otto Strasser: Otto Johann Maximilian Strasser (also German: "Straßer" , see ß; 10 September 1897 – 27 August 1974) was a German politician and an early member of the Nazi Party.  Otto Strasser, together with his brother Gregor Strasser, was a leading member of the party's left-wing faction, and broke from the party due to disputes with the dominant ‘Hitlerite’ faction.  He formed the Black Front, a group intended to split the Nazi Party and take it from the grasp of Hitler.  This group also functioned during his exile and World War II as a secret opposition group.

Supporting paragraphs: Hitler (1962 film) Gregor Strasser
Answer: 31 May 1892