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The Slaughter-House Cases, 83 U.S. 36 (1872) represented a block appeal to the United States Supreme Court testing the relatively new Fourteenth Amendment to the Constitution. It is viewed as a pivotal case in early civil rights law since the Supreme Court refused to extend due process to property rights.
Properly known as In Re Slaughter-House Cases, the decision was regarding three similar cases:
In 1869, the Louisiana legislature passed a law that allowed the city of New Orleans to create a corporation that centralized all slaughterhouse operations in the city. The purpose of the new arrangement was to restrict the dumping of remains and waste in waterways and provide a single place for animals to be kept and slaughtered. There were a number of provisions in the act creating the company the pertinent being:
Some 100 persons involved in the unloading, feeding, slaughtering, and other activities associated with converting livestock into food filed various actions attempting to halt the creation of the new corporaton and any contemplated changes to the slaughtering business in New Orleans.
The lower courts found in favor of the new corporation in all cases. Some five cases were appealed to the Supreme Court, basing their claims on the due process and equal protection clauses in the new amendment.
In a five-four decision, the court held to a narrow interpretation of the amendment, and held that it did not restrict the 'police powers' of the state. The court also held that the amendment was primarily intended to protect former slaves, and so couldn't be broadly applied.
This case is also referred to in some conspiracy theories involving the extension of government powers. This is because it is one of the first decisions where the courts opinion discussed a form of dual citizenship: State Citizens and U.S. Citizens.