Members of groups such as the ku klux klan and the white league believed that:

That whites were superior to African Americans

Explanation:

The Ku Klux Klan is the name adopted by various organizations of right in the United States created in the nineteenth century, which promoted the supremacy of the white race and because of this, racism, xenophobia, anti-Semitism, homophobia, anti-Catholicism and anti-Communism . They have frequently resorted to terrorist activities, violence and acts of intimidation to impose their criteria and to oppress their victims.

answer; the civil right act of 1964;