The Ku Klux Klan was in decline in the 1920s and eventually disappeared. But when the Ku Klux Klan returned in the 1920s to national prominence, it was just to direct its hatred against African-Americans. Hence, option C, "continued to only target African-Americans," is right.
The Ku Klux Klan was founded by ex-confederate soldiers and southerners in 1866 to oppose reconstruction after the Civil War. Later in 1915, it was revived by William Joseph Simmons, who was a colonel, after being inspired by a movie named "Birth of a Nation".
When it was restarted by the colon, its main targets were blacks, and he was spreading hatred against Catholics, Jews, and foreigners.
Therefore, for the given statement, option C, "continued to only target African-Americans" is right.
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