During the 1930s, the ACLU started to engage in work combating police misconduct and Native American rights.

During the 1930s and 1940s Joseph Stalin's NKVD carried out numerous assassinations outside of the Soviet Union, such as the killings of Organization of Ukrainian Nationalists leader Yevhen Konovalets, Ignace Poretsky, Fourth International secretary Rudolf Klement, Leon Trotsky, and the Workers ' Party of Marxist Unification ( POUM ) leadership in Catalonia.

During the 1930s other ideas were proposed as non-standard cosmologies to explain Hubble's observations, including the Milne model, the oscillatory Universe ( originally suggested by Friedmann, but advocated by Albert Einstein and Richard Tolman ) and Fritz Zwicky's tired light hypothesis.

During the 1930s, the silent film comedy was replaced by dialogue from film comedians such as the W. C. Fields and the Marx Brothers.

During the 1930s, multiple acts of cannibalism were reported from Ukraine and Russia's Volga, South Siberian and Kuban regions during the Soviet famine of 1932 – 1933.

During the 1930s, the original art for a daily strip could be drawn as large as 25 inches wide by six inches high.

During the 1930s, the original art for a Sunday strip was usually drawn quite large.

During the 1930s and 40s, significant improvements were made to the ground, making it one of the largest in the country at that time.

During the 1930s the French Army experimented with integrating mounted and mechanised cavalry units into larger formations.

During the 1930s and early 1940s, Alston created illustrations for magazines such as Fortune, Mademoiselle, The New Yorker, Melody Maker and others.

During the early 1930s throughout Europe, Jewish owners of numerous fine art masterpieces found themselves forced to give up or sell off their collections for minimal prices due to anti-Jewish laws created by the new Nazi regime.

During the late 1920s and early 1930s Eisenhower's career in the post war army stalled somewhat, as military priorities diminished ; many of his friends resigned for high-paying business jobs.

During the 1920s and 1930s destroyers were often deployed to areas of diplomatic tension or humanitarian disaster.

During the Great Depression of the 1930s, John Maynard Keynes authored a book entitled The General Theory of Employment, Interest and Money outlining the key theories of Keynesian economics.

During the 1920s and 1930s, Aimee Semple McPherson was a controversial faith healer of growing popularity during the Great Depression.

During the latter's dictatorship in the 1930s, Guatemala was further opened up to foreign investment, with special favors being made by Ubico to the United Fruit Company in particular.

During the late 1930s and through the 1940s — the heyday of big band jazz and swing music — the guitar was an important rhythm section instrument.

During the early 1930s, the Vienna Circle dispersed, mainly because of political upheaval and the deaths of Hahn and Schlick.

During the 1920s and the 1930s, Stalin fought and defeated the political influence of Leon Trotsky and of the Trotskyists in Russia, by means of slander, anti-Semitism, programmed censorship, expulsions, exile ( internal and external ), and imprisonment.

Hofmann was renowned not only as an artist but also as a teacher of art, and a modernist theorist both in his native Germany and later in the U. S. During the 1930s in New York and California he introduced modernism and modernist theories to a new generation of American artists.

During the 1930s, the illustrator Vernon Grant developed Snap, Crackle and Pop as gnome-like mascots for the Kellogg Company.

During the 1930s and 1940s, the state passed labor laws, implemented agrarian reform, and assumed a role in modernization, influenced in part by the leadership of Juan Domingo Perón in Argentina and Getúlio Dornelles Vargas in Brazil.

During the 1930s Belgian colonial authorities in Rwanda used phrenology to explain the so-called superiority of Tutsis over Hutus.

During the 1930s, the minotaur replaced the harlequin as a common motif in his work.

During the 1930s and 1940s, Heinlein was deeply interested in Alfred Korzybski's General Semantics and attended a number of seminars on the subject.

During sporadic excavations at Boğazköy ( Hattusa ) that began in 1906, the archaeologist Hugo Winckler found a royal archive with 10, 000 tablets, inscribed in cuneiform Akkadian and the same unknown language as the Egyptian letters from Kheta — thus confirming the identity of the two names.

Four terracotta lamps of Phoenician origin dated to the 8th century BCE were discovered in Ain Jenin by archaeologist G. I. Harding, and are interpreted as attesting to some form of contact and exchange between the residents of Jenin at that time and those of Phoenicia. During the Roman era, Jenin was called " Ginae.

During the 1980s, the interdisciplinary team of geologist Jelle Zeilinga de Boer, archaeologist John R. Hale, forensic chemist Jeffrey P. Chanton, and toxicologist Henry R. Spiller investigated the site at Delphi using this photograph and other sources as evidence, as part of a United Nations survey of all active faults in Greece.

During the late 1960s and into the 1970s, archaeologist Kent Flannery began championing the idea that Systems theory could be used in archaeology to attack questions of culture from an unbiased perspective.

During his travels, Tylor met Henry Christy, a fellow Quaker, ethnologist and archaeologist.

During that year the archaeologist Paul Émile Botta uncovered the remains of the ancient city of Niniveh, the capital of the Assyrian Empire.

During the four days of the petition, A Scientific Support for Darwinism received signatures at a rate 697, 000 percent higher than the Discovery Institute's petition, A Scientific Dissent from Darwinism, according to archaeologist R. Joe Brandon.

During an excavation in an abandoned village in the Volga region, archaeologist Alexander Kozhevin excavated an ancient Vishnu idol.

During 1866 Antonio Salviati founded Compagnia Venezia Murano with British diplomat and archaeologist Austen Henry Layard.

During 1983 – 85 American archaeologist Dr Johan Reinhard directed three surveys of archaeological sites on the summit and slopes of the mountain.

During this time he was assisted in his photograhic work by the nascent archaeologist and photographer, John Henry Haynes.

During the 1940s, archaeologist Nikolai Voronin discovered the well-preserved remains of Andrei Bogolyubsky's palace in Bogolyubovo ( dating from 1158 – 65 ).

During excavations by archaeologist Wilhelm Berg ( 1891 – 1892 ), the remains of the monastery where discovered.

During that time he gave lessons not only to Alexander, but also to two other future kings: Ptolemy and Cassander.

During this sequence, it is revealed that Mrs. Alexander died from the injuries inflicted during the gang-rape, and her husband has decided to continue living " where her fragrant memory persists " despite the horrid memories.

During the next three years, Alexander seemed to renew his attempts to subdue the states of Thessaly, especially Magnesia and Phthiotis, for upon the expiry of the truce, in 364 BC, they again applied to Thebes for protection from him.

* 1242 – During a battle on the ice of Lake Peipus, Russian forces, led by Alexander Nevsky, rebuff an invasion attempt by the Teutonic Knights.

During the University strike of 1229, Alexander participated in an embassy to Rome to discuss the place of Aristotle in the curriculum.

During the summer of 1959, Pasternak began writing The Blind Beauty, a trilogy of stage plays set before and after Alexander II's abolition of serfdom in Russia.

During the Anglo-French War ( 1627 – 1629 ), under Charles I, by 1629 the Kirkes took Quebec City, Sir James Stewart of Killeith, Lord Ochiltree planted a colony on Cape Breton Island at Baleine, Nova Scotia and Alexander ’ s son, William Alexander, 1st Earl of Stirling established the first incarnation of “ New Scotland ” at Port Royal.

During a 1924 – 25 expedition, Alexander H. Rice, Jr. of Harvard University traveled up the Orinoco, traversed the Casiquiare canal, and descended the Rio Negro to the Amazon at Manaus.

During the 1940s Alston also took occasional art classes studying under Alexander Kostellow.

During the 11th Party Congress Alexander Shliapnikov, the leader of the Workers ' Opposition, claimed that certain individuals from the Central Committee had threatened him.

During his stay there the curriculum was renewed by the principal of the school, Alexander Hegius.

During the War of 1812, Key, accompanied by the American Prisoner Exchange Agent Colonel John Stuart Skinner, dined aboard the British ship HMS Tonnant, as the guests of three British officers: Vice Admiral Alexander Cochrane, Rear Admiral George Cockburn, and Major General Robert Ross.

During the last years of the Russian Empire, in the early 20th century, many authors continued to write in the gothic fiction genre, including historian and historical fiction writer Alexander Valentinovich Amfiteatrov, Leonid Nikolaievich Andreyev, who developed psychological characterization, symbolist Valery Yakovlevich Bryusov, Alexander Grin, Anton Pavlovich Chekhov and Aleksandr Ivanovich Kuprin.

During these years Trotsky began developing his theory of permanent revolution, which led to a close working relationship with Alexander Parvus in 1904 – 1907.

During the autopsy of Alexander Luthor Jr., he secretly exposes John to the chemicals involved in his creating his new army of superheroes, turning John into a literal man of steel.

During Alexander III's reign, the monarchy's opponents quickly disappeared underground.

During the reign of Ivan the Terrible, the former family became known as Yakovlev ( Alexander Herzen being the most illustrious of them ), whereas grandchildren of Roman Zakharin-Yuriev changed their name to Romanov.

During this period he studied under, among others, Alexander Winkler, Anatoly Lyadov, Nikolai Tcherepnin and Nikolai Rimsky-Korsakov ( though when Rimsky-Korsakov died in 1908, Prokofiev noted that he had only studied orchestration with him ' after a fashion ' – that is, he was just one of many students in a heavily attended class — and regretted that he otherwise ' never had the opportunity to study with him ').

* April 5 – During a battle on the ice of Lake Peipus, Russian forces, led by Alexander Nevsky, rebuff an invasion attempt by the Teutonic Knights.

During the Second World War, Alexander Dubček joined the underground resistance against the wartime pro-German Slovak state headed by Jozef Tiso.

During the war, Alexander Dubček joined the Communist Party of Slovakia ( KSS ), which had been created after the formation of the Slovak state and in 1948 was transformed into the Slovak branch of the Communist Party of Czechoslovakia ( KSČ ).

During the siege of Tyre, the Cypriot Kings went over to Alexander the Great.

During the 290s BC, Hellenistic civilization begins its emergence throughout the successor states of the former Argead Macedonian Empire of Alexander the Great resulting in the diffusion of Greek culture throughout the Ancient world and advances in Science, mathematics, philosophy and etc.