The Enforcement Acts were a series of laws passed by the United States Congress between 1870 and 1871 to combat the violent activities of the Ku Klux Klan and other white supremacist organizations in the post-Civil War South. These acts aimed to protect the civil rights of African Americans, including the right to vote, hold office, serve on juries, and receive equal protection under the law, by empowering the federal government to intervene in state affairs.