For all of its cultural ferment, however, the 1920s were also a difficult time for radicals and immigrants and anything “modern.” Fear of foreign radicals led to the executions of Nicola Sacco and Bartolomeo Vanzetti, two Italian anarchists, in 1927. In May 1920, the two had been arrested for robbery and murder connected with an incident at a Massachusetts factory. Their guilty verdicts were appealed for years as the evidence surrounding their convictions was slim. For instance, while one eyewitness claimed that Vanzetti drove the get-away car, but accounts of others described a different person altogether. Nevertheless, despite around world lobbying by radicals and a respectable movement among middle class Italian organizations in the U.S., the two men were executed on August 23, 1927. Vanzetti conceivably provided the most succinct reason for his death, saying, “This is what I say . . . . I am suffering because I am a radical and indeed I am a radical; I have suffered because I was an Italian, and indeed I am an Italian.”

Many Americans expressed anxieties about the changes that had remade the United States and, seeking scapegoats, many middle-class white Americans pointed to Eastern European and Latin American immigrants (Asian immigration had already been almost completely prohibited), or African Americans who now pushed harder for civil rights and after migrating out of the American South to northern cities as a part of the Great Migration, that mass exodus which carried nearly half a million blacks out of the South between just 1910-1920. Protestants, meanwhile, continued to denounce the Roman Catholic Church and charged that American Catholics gave their allegiance to the Pope and not to their country.

In 1921, Congress passed the Emergency Immigration Act as a stopgap immigration measure, and then, three years later, permanently established country-of-origin quotas through the National Origins Act. The number of immigrants annually admitted to the United States from each nation was restricted to two percent of the population who had come from that country and resided in the United States in 1890. (By pushing back three decades, past the recent waves of “new” immigrants from Southern and Eastern Europe, Latin America, and Asia, the law made it extremely difficult for immigrants outside of Northern Europe to legally enter the United States.) The act also explicitly excluded all Asians, though, to satisfy southern and western growers, temporarily omitted restrictions on Mexican immigrants. The Sacco and Vanzetti trial and sweeping immigration restrictions pointed to a rampant nativism. A great number of Americans worried about a burgeoning America that did not resemble the one of times past. Many wrote of an American riven by a cultural war.