Question: Who was the rival of the politician who was the Minister of Propaganda of Nazi German from 1933 to 1945?

Context paragraphs:
Nazi crimes against the Polish nation: Nazi German crimes against the Polish nation claimed the lives of 2.77 million ethnic Poles and 2.7 to 2.9 million Polish Jews, according to estimates of the Polish government-affiliated Institute of National Remembrance (IPN).  Historians outside Poland put the number of Jewish victims of the Holocaust in occupied Poland at 3.0 million.  The original assumptions of Generalplan Ost were based on Nazi plans to exterminate around 85% (over 20 million) of the ethnically Polish citizens of Poland, with the remaining 15% to be used as slaves.  The dissemination of knowledge on the subject of Nazi German crimes in World War II was entrusted by an Act of the Polish Parliament in 2000 to the Institute, which replaced the former Main Commission for the Investigation of German Crimes against the Polish Nation.

Propaganda in Nazi Germany: The propaganda used by the German Nazi Party in the years leading up to and during Adolf Hitler's leadership of Germany (1933–1945) was a crucial instrument for acquiring and maintaining power, and for the implementation of Nazi policies.  The pervasive use of propaganda by the Nazis is largely responsible for the word "propaganda" itself acquiring its present negative connotations.

List of German films of 1933–45: The Nazi German era lasted from Adolf Hitler's assumption of power on 30 January 1933 to Karl Dönitz's surrender at the end of World War II on 8 May 1945.  While not as highly regarded as films of the preceding Weimar Republic era, the films of Nazi Germany, mainly made under control of Joseph Goebbels, hold a fascination for many, both as historical documents of one of the most important and disturbing periods of 20th century history, as well as for their own artistic merit.  While some of them are popular only within the Neo-Nazi subculture, comedies starring Heinz Rühmann rank among the favourites of all Germans, and the propaganda films of Leni Riefenstahl have been influential, though controversial.

Ernst Schlange: Ernst Schlange (September 1, 1888 – † 1947) was a Nazi German politician, Gauleiter of Berlin-Brandenburg and a member of the Prussian Landtag.  Severely wounded in World War I, he became active in various anti-Semitic far right political groups and eventually joined the National Socialist German Worker's Party in 1925.  He was opposed to the party's more extreme tactics for gaining power and eventually ran afoul of Reich Minister of Propaganda and Gauleiter of Berlin, Joseph Goebbels.  This caused Schlange to lose his leadership posts by the mid-1930s.  He died under obscure circumstances at the end of World War II.

Breslau-Dürrgoy concentration camp: Breslau-Dürrgoy concentration camp or KZ Dürrgoy was a short-lived Nazi German concentration camp set up in the southern part of Wrocław (German: "Breslau" ), then in Germany, before World War II on the grounds of the old fertilizer factory "Silesia".  It was located in what, since 1945, has become known as the Tarnogaj neighbourhood of Wrocław (German: "Dürrgoy" ), at the Strehlener Chaussee or Strzeliński Street (today ul.  Bardzka), opposite the cemetery of the Holy Ghost.  The camp, intended for the opponents of Nazism, was established at a place of the former POW camp for French prisoners of World War I, converted and utilized by the fertilizer factory.  The new camp was founded on the initiative of the commander of SA in Silesia, "SA-Obergruppenführer" Edmund Heines, on 12 March 1933, and liquidated on 10 August 1933 with all prisoners transported to a larger concentration camp at Osnabrück.

Franz Schwede: Franz Reinhold Schwede (5 March 1888 – 19 October 1960) was a Nazi German politician, Lord Mayor of Coburg and Gauleiter of Pomerania.  An early supporter of Adolf Hitler in Coburg, Schwede used intimidation and propaganda to help elect the first Nazi-majority local government in Germany.  This contributed to a personality cult surrounding Schwede and he became known as "Franz Schwede-Coburg".  During World War II he ordered secret executions of the infirm and mass deportations of Jews.  He also played a key role in abandoning the Pomeranian civilian population to the advancing Red Army, while escaping their fate himself.  In 1945 he was captured by the British Army and in 1948 he was tried and convicted of war crimes.

Themes in Nazi propaganda: The propaganda of the National Socialist German Workers' Party regime that governed Germany from 1933 to 1945 promoted Nazi ideology by demonizing the enemies of the Nazi Party, notably Jews and communists, but also capitalists and intellectuals.  It promoted the values asserted by the Nazis, including heroic death, "Führerprinzip" (leader principle), "Volksgemeinschaft" (people's community), "Blut und Boden" (blood and soil) and pride in the Germanic "Herrenvolk" (master race).  Propaganda was also used to maintain the cult of personality around Nazi leader Adolf Hitler, and to promote campaigns for eugenics and the annexation of German-speaking areas.  After the outbreak of World War II, Nazi propaganda vilified Germany's enemies, notably the United Kingdom, the Soviet Union and the United States, and in 1943 exhorted the population to total war.

Nazi board games: Nazi board games were an element of Adolf Hitler’s propaganda campaign within Nazi Germany.  Hitler’s Propaganda Minister, Joseph Goebbels, understood that “To be perceived, propaganda must evoke the interest of an audience and must be transmitted through an attention-getting communications medium.”  Board games and toys for children served as a way to spread racial, military, and political propaganda to German youth.

Joseph Goebbels: Paul Joseph Goebbels (] ; 29 October 1897 – 1 May 1945) was a German politician and Reich Minister of Propaganda of Nazi Germany from 1933 to 1945.  He was one of Adolf Hitler's close associates and most devoted followers, and was known for his skills in public speaking and his deep, virulent antisemitism, which was evident in his publicly voiced views.  He advocated progressively harsher discrimination, including the extermination of the Jews in the Holocaust.

Reich Chamber of Culture: The Reich Chamber of Culture (Reichskulturkammer) was a government agency in Nazi Germany.  It was established by law on 22 September 1933 in the course of the "Gleichschaltung" process at the instigation of Reich Minister Joseph Goebbels as a professional organization of all German creative artists.  Defying the competing ambitions of the German Labour Front (DAF) under Goebbels' rival Robert Ley, it was meant to gain control over the entire cultural life in Germany creating and promoting Aryan art consistent with Nazi ideals.

Supporting paragraphs: Reich Chamber of Culture Joseph Goebbels
Answer: Robert Ley