A "Red Scare" is the promotion of fear of a potential rise of communism or radical leftism. In the United States, the First Red Scare was about worker (socialist) revolution and political radicalism. The Second Red Scare was focused on national and foreign communists influencing society, infiltrating the federal government, or both.
The first Red Scare began following the Bolshevik Russian Revolution of 1917 and the intensely patriotic years of World War I as anarchist and left-wing social agitation aggravated national, social, and political tensions. Political scientist, and former member of the Communist Party Murray B. Levin wrote that the Red Scare was "a nationwide anti-radical hysteria provoked by a mounting fear and anxiety that a Bolshevik revolution in America was imminent—a revolution that would change Church, home, marriage, civility, and the American way of Life." Newspapers exacerbated those political fears into anti-foreign sentiment because varieties of radical anarchism were becoming popular as possible solutions to poverty, often by recent European immigrants (cf. hyphenated-Americans). When the Industrial Workers of the World (IWW) backed several labor strikes in 1916 and 1917, the press portrayed them as "radical threats to American society" inspired by "left-wing, foreign agents provocateurs." Those on the side of the IWW claim that the press "misrepresented legitimate labor strikes" as "crimes against society," "conspiracies against the government," and "plots to establish communism." Opponents, on the other hand, saw these as an extension of the radical, anarchist foundations of the IWW, which contends that all workers should be united as a social class and that capitalism and the wage system should be abolished.