<Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The First Red Scare was a period during the early 20th - century history of the United States marked by a widespread fear of Bolshevism and anarchism, due to real and imagined events; real events included those such as the Russian Revolution and anarchist bombings . At its height in 1919--1920, concerns over the effects of radical political agitation in American society and the alleged spread of communism and anarchism in the American labor movement fueled a general sense of concern if not paranoia . </P> <P> The Scare had its origins in the hyper - nationalism of World War I as well as the Russian Revolution . At the war's end, following the October Revolution, American authorities saw the threat of Communist revolution in the actions of organized labor, including such disparate cases as the Seattle General Strike and the Boston Police Strike and then in the bombing campaign directed by anarchist groups at political and business leaders . Fueled by labor unrest and the anarchist bombings, and then spurred on by United States Attorney General A. Mitchell Palmer's attempt to suppress radical organizations, it was characterized by exaggerated rhetoric, illegal search and seizures, unwarranted arrests and detentions, and the deportation of several hundred suspected radicals and anarchists . In addition, the growing anti-immigration nativism movement among Americans viewed increasing immigration from Southern Europe and Eastern Europe as a threat to American political and social stability . </P> <P> Bolshevism and the threat of a Communist - inspired revolution in the U.S. became the overriding explanation for challenges to the social order, even such largely unrelated events as incidents of interracial violence . Fear of radicalism was used to explain the suppression of freedom of expression in form of display of certain flags and banners . The First Red Scare effectively ended in mid-1920, after Attorney General Palmer forecast a massive radical uprising on May Day and the day passed without incident . </P>

Was the u.s. attorney general that led the red scare