Definition
Plessy v. Ferguson, 163 U.S. 537 (1896), is the U.S. Supreme Court decision in which a 7–1 majority upheld a Louisiana statute requiring "equal but separate" railroad cars for white and Black passengers. The ruling established that state-mandated racial segregation did not violate the Fourteenth Amendment's Equal Protection Clause, so long as the separate facilities were nominally equal.
The case was overturned by Brown v. Board of Education (1954) for public schools, and the larger "separate but equal" doctrine was definitively buried by the Civil Rights Act of 1964. For the fifty-eight years between Plessy and Brown, however, it was the constitutional architecture of Jim Crow.
Why it matters
How it works
The case was engineered. The Citizens' Committee, a New Orleans group of Black and Creole activists, recruited Homer Plessy — light-skinned, seven-eighths white by the era's racial accounting — to violate Louisiana's 1890 Separate Car Act by sitting in a "whites only" coach on the East Louisiana Railroad. The railroad cooperated (it disliked the costs of running separate cars). Plessy was arrested by prior arrangement. The legal challenge proceeded from there.
The committee argued that the Separate Car Act violated the Thirteenth Amendment (by imposing a "badge of slavery") and the Fourteenth (by denying equal protection). Justice Henry Billings Brown's majority opinion rejected both: segregation was not slavery, and the Fourteenth Amendment "could not have intended to abolish distinctions based upon color." If Black citizens read inferiority into the law's separation, the Court reasoned, that was "not by reason of anything found in the act, but solely because the colored race chooses to put that construction upon it" — perhaps the most consequential single sentence in the opinion.
Justice Harlan dissented alone. He acknowledged that the Constitution was, in his words, "color-blind" — meaning the law could not classify by race — and predicted that the Plessy ruling would "in time prove to be quite as pernicious as the decision made by this tribunal in the Dred Scott case." He was correct. Plessy did not invent Jim Crow, but it constitutionalized it: state legislatures interpreted the ruling as a green light to extend segregation from rail cars to schools, restrooms, restaurants, water fountains, hospitals, and cemeteries.
The "equal" half of "separate but equal" was almost universally ignored. Through the 1930s and 1940s, NAACP attorneys — Charles Hamilton Houston, then Thurgood Marshall — pursued a strategic litigation campaign that took the doctrine on its own terms, demonstrating in case after case that the separate facilities were patently unequal. That campaign culminated in Brown v. Board (1954), where a unanimous Court finally held that "separate educational facilities are inherently unequal." Plessy was, in effect, repudiated — though not formally overruled in every domain — and the legal scaffolding of Jim Crow began to fall.