Question: When was the man who saved 20,000 Jews hanged? 

Context paragraphs:
Traian Popovici: Traian Popovici (October 17, 1892 – June 4, 1946) was a Romanian lawyer and mayor of Cernăuţi during World War II, known for saving 20,000 Jews of Bukovina from deportation.

Hideki Tojo: Hideki Tōjō (Kyūjitai: 東條 英機 ; Shinjitai: 東条 英機 ; "   "; December 30, 1884 – December 23, 1948) was a general of the Imperial Japanese Army (IJA), the leader of the Imperial Rule Assistance Association, and the 27th Prime Minister of Japan during much of World War II, from October 17, 1941, to July 22, 1944.  As Prime Minister, he was responsible for ordering the attack on Pearl Harbor, which initiated war between Japan and the United States, although planning for it had begun in April 1941 before he entered office.  After the end of the war, Tojo was arrested, sentenced to death for Japanese war crimes by the International Military Tribunal for the Far East, and hanged on December 23, 1948.

Ettefagh Synagogue: After the Second World War, with the installation of a new government in Iraq, the situation of the Jews in Iraq deteriorated.  After prominent members of the Jewish community such as Laura Khozoee were arrested, and Shafiq Adas, a successful Jewish businessman, was hanged, many Iraqi Jews decided to emigrate.  Some left for Israel while others decided to settle in Iran.  They reached Iran with the help of Kurdish Jews and many arrived at Khorramshahr.  With the help of Harun Abdolnabi, a prominent Jew in Khorramshahr, some were able to go to Tehran and obtain legal documents.  From 1946 to 1951 many Iraqi Jews moved to Tehran, while others moved to Europe and the United States.  At this time, with the help of Iranian Jews, the Iraqi Jews decided to create a cultural center.  In 1946 Meir Abdullah Batson bought a large piece of land with an area of over 5000 m2 near the University of Tehran, in Ghods Street.  He separated a piece of land of over 865 m2 and turned it into a synagogue, with the help of Saleh and Davood Mashi, Heskel Haim, and others.  The community wanted to name the synagogue after Meir Abdullah, but the government did not accept it because he was a foreign citizen.  Hence the name "Ettefagh" was chosen, and it became the main place of gathering for the Iraqi Jews of Tehran.  The synagogue architecture was designed in the style of Babylonian architecture, and it was fitted with the most advanced cooling system of the time.  Most of the Torah scrolls in the synagogue were brought by the Jews who came from Iraq, and a Babylonian Talmud in Aramaic script was dedicated to the synagogue.  Many Iraqi Jews emigrated from Iran during the Iranian revolution, and today only a few families (mainly Iranian Jews) still use the synagogue.

Będzin Ghetto: The Będzin Ghetto (a.k.a. the Bendzin Ghetto, Yiddish: בענדינער געטאָ‎ , Bendiner geto; German: "Ghetto von Bendsburg" ) was a World War II ghetto set up by Nazi Germany for the Polish Jews in the town of Będzin in occupied south-western Poland.  The formation of the 'Jewish Quarter' was pronounced by the German authorities in July 1940.  Over 20,000 local Jews from Będzin, along with additional 10,000 Jews expelled from neighbouring communities, were forced to subsist there until the end of the Ghetto history during the Holocaust.  Most of the able-bodied poor were forced to work in German military factories before being transported aboard Holocaust trains to the nearby concentration camp at Auschwitz where they were exterminated.  The last major deportation of the ghetto inmates by the German SS – men, women and children – between 1 and 3 August 1943 was marked by the ghetto uprising by members of the Jewish Combat Organization.

Giovanni Palatucci: Giovanni Palatucci (31 May 1909 – 10 February 1945) was an Italian police official who was long believed to have saved thousands of Jews in Fiume between 1939 and 1944 (current Rijeka in Croatia) from being deported to Nazi extermination camps.  In 2013 a research panel of historians led by the "Centro Primo Levi" reviewed almost 700 documents and concluded that Palatucci had followed RSI and German orders concerning the Jews and enabling the deportation of the majority of the 570 Jews living in Fiume and surrounding areas, 412 of whom were deported to Auschwitz, a higher percentage than in any Italian city.  The matter is currently the topic of scholarly debate.  A national commission of historians recommended by the Union of the Italian Jewish Communities, the Center for Contemporary Jewish Documentation in Milan, the Italian Ministry of the Interior and the Centro Primo Levi NY is conducting a comprehensive review of the documents.

Raoul Wallenberg Holocaust Memorial Park: The Raoul Wallenberg Emlékpark (memory park) in the rear courtyard of the Dohány Street Synagogue holds the "Memorial of the Hungarian Jewish Martyrs" — at least 400,000 Hungarian Jews were murdered by the Nazis.  Made by Imre Varga, it resembles a weeping willow whose leaves bear inscriptions with the names of victims.  There is also a memorial to Wallenberg and other Righteous Among the Nations, among them: Swiss Vice-consul Carl Lutz; Giorgio Perlasca, an Italian man who, with a strategic escamotage, declared himself the Spanish consul, releasing documents of protection and current passports to Jews in Budapest without distinction (he saved five thousand); Mons.  Angelo Rotta, an Italian Prelate Bishop and Apostolic Nuncio of the State of Vatican City in Budapest, which issued protective sheets, misrepresentations of baptism (to save them from forced labor) and Vatican passports to Jews, without distinction of any kind present in Budapest (saving fifteen thousand), who saved, with his secretary Mons.  Gennaro Verolino tens of thousands of Hungarian Jews during World War II.

Rescue of Jews by Catholics during the Holocaust: The Roman Catholic Church - through lobbying of Axis officials, provision of false documents, and hiding of people in monasteries, convents, schools, among families and the institutions of the Vatican itself - saved hundreds of thousands of Jews from being murdered by the Nazis during the Holocaust.  The Israeli diplomat and historian Pinchas Lapide estimated the figure at between 700,000 and 860,000 - although the figure is contested.  The Catholic Church itself faced persecution in Hitler's Germany, and institutional German Catholic resistance to Nazism centred largely on defending the Church's own rights and institutions.  Broader resistance tended to be fragmented and led by individual effort in Germany - but in every country under German occupation, priests played a major part in rescuing Jews.  Aiding Jews met with severe penalty and many rescuers and would-be rescuers were killed - as with St Maximillian Kolbe, Giuseppe Girotti and Bernard Lichtenberg who were sent to the Concentration Camps.

History of the Jews in Belarus: The Jews in Belarus were the third largest ethnic group in the country in the first half of the 20th century.  Before World War II, Jews were the third among the ethnic groups in Belarus and comprised more than 40% of the population in cities and towns.  The population of cities such as Minsk, Pinsk, Mahiliou, Babrujsk, Viciebsk, and Homiel was more than 50% Jewish.  In 1939 there were 375,000 Jews in Belarus, or 13.6% of the total population.  Some 246.000 Jews of 375.000—66% of the Jewish population—were killed in Belarus during the Holocaust.  According to the 2009 census, there were 12,926 Jews in Belarus (0.1% of the population).  The Jewish Agency estimates the community of Jews in Belarus at 20,000.

Marvin Tokayer: Marvin Tokayer (born 1936) is an American Rabbi and author.  Tokayer was a United States Air Force chaplain in Japan.  He was then advised to go to Japan as the only rabbi by the Lubavitcher Rebbe.  He then became rabbi to the Jewish community of Japan for eight years.  He has written 20 books in Japanese.  He has researched the history of the Jews in China and Japan and the role that the Japanese played in helping victims of the Holocaust.  In the 2010s, he has collaborated with Kenneth X. Robbins in editing studies of expatriate communities in Asia.  He praises General Hideki Tojo and General Kiichiro Higuchi who saved 20,000 Jews who were sending back to Germany by the USSR, and are disappointed at the fact that this history is not known.  <ref>　<ref>

The Bielski Brothers (book): The Bielski Brothers: The True Story of Three Men Who Defied the Nazis, Built a Village in the Forest, and Saved 1,200 Jews is a non-fiction book by Peter Duffy, which was published in 2003.  It tells the story of Tuvia Bielski, Alexander Zeisal Bielski(Zus), Aharon Bielski, and Asael Bielski, four Jewish brothers who established a large partisan camp in the forests of Belarus during World War II, and so saved 1,200 Jews from the Nazis.  The book describes how, in 1941, three brothers witnessed their parents and two other siblings being led away to their eventual murders.  The brothers fought back against Germans and collaborators, waging guerrilla warfare in the forests of Belarus.  By using their intimate knowledge of the dense forests surrounding the towns of Lida and Novogrudek, the Bielskis evaded the Nazis and established a hidden base camp, then set about convincing other Jews to join their ranks.  The Germans came upon them once but were unable to get rid of them.  As more Jews arrived each day, a robust community began to emerge; a "Jerusalem in the woods".  In July 1944, after some 30 months in the woods, the Bielskis learned that the Germans, overrun by the Red Army, were retreating back toward Berlin.

Supporting paragraphs: Marvin Tokayer Hideki Tojo
Answer: December 23, 1948