United States v. Cruikshank, 92 U.S. 542 (1876), was a landmark decision of the United States Supreme Court ruling that the U.S. Bill of Rights did not limit the power of private actors or state governments despite the adoption of the Fourteenth Amendment. It reversed the federal criminal convictions for the civil rights violations committed in aid of anti-Reconstruction murders. Decided during the Reconstruction Era, the case represented a major defeat for federal efforts to protect the civil rights of African Americans.
The case developed from the strongly contested 1872 Louisiana gubernatorial election and the subsequent Colfax massacre, in which dozens of black people and three white people were killed. Federal charges were brought against several whites using the Enforcement Act of 1870, which prohibited two or more people from conspiring to deprive anyone of his constitutional rights. Charges included hindering the freedmen's First Amendment right to freely assemble and their Second Amendment right to keep and bear arms.