 Antisemitism in the United States reached its peak during the interwar period.The rise of the Ku Klux Klan in the 1920s, the antisemitic works of newspapers and radio speeches in the late 1930s indicated the strength of attacks on the Jewish community.One element in American antisemitism during the 1920s was the identification of Jews with Bolshevism where the concept of Bolshevism was used pejoratively in the country.