United States v. Cruikshank
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.
Source: Wikipedia — United States v. Cruikshank (CC BY-SA 4.0)