All three of these factors played a role in causing nativist activities during the 1920s, but the emergence of the second Ku Klux Klan was a major cause. The Ku Klux Klan experienced a resurgence in the 1920s, with its membership expanding rapidly, reaching its peak around 1924. The Klan targeted not only African Americans, as it did during its first iteration in the Reconstruction era, but also Catholics, Jews, immigrants, and other minority groups. They rallied around a platform of nativism, advocating for restrictions on immigration and promoting the idea of "100% Americanism." Their activities included violence, intimidation, and the promotion of discriminatory policies. Thus, the emergence and influence of the second Ku Klux Klan was a significant cause of nativist activities during the 1920s.
