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 the next three years he was on many famous recordings, including " Cotton Tail " and " All Too Soon "; his contribution ( together with that of bassist Jimmy Blanton ) was so important that Ellington's orchestra during that period is known as the Blanton – Webster band.

During the post-World War I period ski-lifts were built in Swiss and Austrian towns to accommodate winter visitors, but summer tourism continued to be important ; by the mid-20th century the popularity of downhill skiing increased greatly as it became more accessible and in the 1970s several new villages were built in France devoted almost exclusively to skiing, such a Les Menuires.

During the last twenty years of his life Alexios lost much of his popularity.

During the 19th and 20th centuries, coin collecting increased further in popularity.

During this period of decline in disco's popularity, several record companies folded, were reorganized, or were sold.

During World War I the dachshunds ' popularity in the United States plummeted because of this association and there are even anecdotes such as a Dachshund being stoned to death on the high street of Berkhamsted, England at this time because of its association with the enemy.

During the early 1990s, the Compact Disc surpassed the gramophone record in popularity, but gramophone records continued to be made ( although in very limited quantities ) into the 21st century — particularly for club DJs and for local acts recording on small regional labels.

During the time of Nazi Germany ( 1933 – 1945 ), the Nazi Party enjoyed particular popularity and support among the town's population.

During the immediate post-war years the cinematic industry was also threatened by television, and the increasing popularity of the medium meant that some film theatres would bankrupt and close.

During the 1980s, anime gained in popularity, with new animated movies released every summer and winter, often based upon popular anime television series.

During the late 1950s, high-stakes games such as Twenty One and The $ 64, 000 Question began a rapid rise in popularity.

During the show's peak in popularity, Hee Haw often competed in syndication against The Lawrence Welk Show, a long-running ABC program which had also been canceled in 1971, also in an attempt to purge the networks of older demographic-leaning programs.

During the first decade of the new century, hedge funds regained popularity worldwide and in 2008, the worldwide industry held US $ 1. 93 trillion in assets under management.

During the 2006 Israel-Lebanon conflict, the Iranian government enjoyed something of a resurgence in popularity amongst the predominantly Sunni " Arab street ," due to its support for Hezbollah and to President Mahmoud Ahmadinejad's vehement opposition to the United States and his call that Israel shall vanish.

During the 1940s, English knitting rose in popularity while Continental knitting fell.

During this time it was sometimes said that MUD stands for " Multi Undergraduate Destroyer " due to their popularity among college students and the amount of time devoted to them.

During his time with the club, Beckham's popularity across Asia was integral to the club's commercial success in that part of the world.

During the Counter Reformation and Baroque periods ( late 16th and 17th centuries ), the cult of Mary Magdalene saw a great, new popularity as the Catholic Church publicized her as an attractive, persusasive model of repentance and reform, in keeping with the goals of the reform Council of Trent ( 1545 – 63 ).

During the height of its popularity, the website was receiving over 6 million hits per month.

During this period, the portrayal of opium in literature became squalid and violent, British opium trade was largely supplanted by domestic Chinese production, purified morphine and heroin became widely available for injection, and patent medicines containing opiates reached a peak of popularity.

During this time of popularity, users called opium " God's Own Medicine.

During the Great Depression, Pepsi gained popularity following the introduction in 1936 of a 12-ounce bottle.

During the early 2000s, and with the increasing popularity of Web 2. 0, new ways to filter the software became available.

During the first decade of the 20th century, some songs under the name of samba were recorded, but these recordings did not achieve great popularity.

During the mid to late 1980s this was the dominant 10 Mbit / s Ethernet standard, but due to the immense demand for high speed networking, the low cost of Category 5 Ethernet cable, and the popularity of 802. 11 wireless networks, both 10BASE2 and 10BASE5 have become increasingly obsolete, but still exist in some locations.