The best sentence that describes the activities of the Ku Klux Klan in the 1920s is option d.
They promoted anti immigrant, anti-Catholic and anti African American sentiment
The Klan were also referred to as the KKK in the United States. They were a very severe racist group that existed in the country.
They were a white supremacists group that had their agenda as the unleashing of terror on minority groups such as the black Americans.
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