to prevent African Americans from gaining any power
Explanation:
The Ku Klux Klan was a group that rejected not only the ideas of reconstruction in the south, but also rejected the freedom of blacks and any attempt to integrate them into American society. They took an extremely violent stance towards blacks, trying in every way to prevent them from having the minimum power within society and persecuted them violently, as well as persecuted those who tried to protect them.
Individuals cannot be compelled by government force to reveal information in which said individual would be incriminated. This is rephrased as "the right to remain silent".
