During the 1920s, the ACLU expanded its scope to also include protecting the free speech rights of artists and striking workers, and working with the National Association for the Advancement of Colored People ( NAACP ) to combat racism.

During the early 1920s, he and his father-in-law developed the Stockade Building System for producing light-weight, weatherproof, and fireproof housing — although the company would ultimately fail.

During the 1920s her only paid work was as a columnist for feminist journals, notably Equal Rights and Time and Tide.

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 1920s, Afghanistan established diplomatic relations with most major countries.

During the 1920s writers such as Clare Winger Harris and Gertrude Barrows Bennett published science fiction stories written from female perspectives and occasionally dealt with gender and sexuality based topics.

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

During the 1920s, women organized and participated in gymnastics events.

During the 1920s, the importance of the position declined.

During the 1920s, several improvements were put in place, such as a new 74 cubic inch ( 1, 200 cc ) V-Twin, introduced in 1922, and the " Teardrop " gas tank in 1925.

During the US bull market of the 1920s, there were numerous such vehicles offered privately to wealthy investors.

During the 1920s, Kyrgyzstan saw considerable cultural, educational, and social change.

During the 1920s, Wimsey had affairs with various women, which were the subject of much gossip in Britain and Europe.

During the 1920s the Hubbards repeatedly relocated around the United States and overseas.

During the second half of the 1920s, France, Britain and Germany were all using the League of Nations as the focus of their diplomatic activity, and each of their foreign secretaries attended League meetings at Geneva during this period.

During the late 1920s, ' 30s, and ' 40s, Bertrand Russell and Ludwig Wittgenstein's formalism was developed by a group of philosophers in Vienna and Berlin, who formed the Vienna Circle and Berlin Circle into a doctrine known as logical positivism ( or logical empiricism ).

During the 1920s, the experiments pioneered by Michelson were repeated by Dayton Miller, who publicly proclaimed positive results on several occasions, although not large enough to be consistent with any known aether theory.

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.

During the 1920s his short subjects were in much demand, with stars like Billy Bevan, Andy Clyde, Harry Gribbon, Vernon Dent, Alice Day, Ralph Graves, Charlie Murray, and Harry Langdon.

During the Civil War the commander cadres were trained at the Nicholas General Staff Academy of the Russian Empire, which became the Frunze Military Academy in the 1920s.

During the 1920s, Afghanistan established diplomatic relations with most major countries.

During the 1920s and early ' 30s, The Saint is fighting European arms dealers, drug runners, and white slavers while based in his London home.

During the 1920s and 1930s there were some successful movements for self-determination in the beginnings of the process of decolonization.

During the 1920s, he first started to systematize and extend the Bahá ' í administration throughout the world where there existed Bahá ' í communities ; because the Bahá ' í community was relatively small and undeveloped when he assumed the leadership of the religion, he strengthened and developed it over many years to the point where it was capable of supporting the administrative structure envisioned by ` Abdu ' l-Bahá.

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 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 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.

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.