Plessy v. Ferguson was the 1896 United States Supreme Court decision that upheld racial segregation under the doctrine of “separate but equal.” Decided on May 18, 1896, by a 7–1 vote, the ruling allowed states to require separate public facilities for Black and white citizens as long as those facilities were nominally equal in quality. It gave constitutional cover to Jim Crow laws across the American South and stood for nearly sixty years, until the Court reversed course in Brown v. Board of Education in 1954.
The Louisiana Law and the Test Case
In 1890, Louisiana passed the Separate Car Act, requiring railway companies to provide “equal but separate accommodations for the white and colored races.” Passengers who sat in the wrong car faced a twenty-five dollar fine or up to twenty days in the parish jail, and railroad officers who assigned passengers incorrectly faced the same penalty.1Bill of Rights Institute. Louisiana Separate Car Act, 1890
A New Orleans group called the Comité des Citoyens, founded by Rodolphe Desdunes and Louis Martinet, set out to challenge the law in court. Desdunes wrote that “it is more noble and dignified to fight, no matter what, than to show a passive attitude of resignation.”2New Orleans Historical. Comite des Citoyens The Committee chose Homer Plessy, a man of seven-eighths Caucasian and one-eighth African ancestry whose mixed-race background was not visible in his appearance, to test it.3Justia. Plessy v. Ferguson, 163 U.S. 537
On June 7, 1892, Plessy boarded a whites-only car on the East Louisiana Railroad in New Orleans and refused to move when told to leave.4New Orleans Historical. Plessy’s Arrest He was arrested and charged with violating the Separate Car Act. Judge John Howard Ferguson upheld the law at the trial court, and Plessy’s attorneys, led by Albion Tourgée, appealed through the Louisiana state courts to the United States Supreme Court.
What Plessy’s Lawyers Argued
Plessy’s legal team raised claims under both the Thirteenth and Fourteenth Amendments.5Oyez. Plessy v. Ferguson The Thirteenth Amendment argument was that forcing citizens into separate cars based on ancestry amounted to a “badge of servitude,” recreating a hierarchy the amendment was supposed to abolish.
Under the Fourteenth Amendment, the attorneys argued that the law violated the Equal Protection Clause. Sorting passengers by race was inherently discriminatory, they contended, because it signaled the inferiority of one group. A government that classified its citizens by race could not claim to treat them as equals. This equal protection argument would eventually provide the foundation for overturning the decision decades later.
The Majority Opinion and the Separate but Equal Doctrine
Justice Henry Billings Brown wrote the majority opinion, joined by six other justices. The Court acknowledged that the Fourteenth Amendment was meant to establish “absolute equality” of the races before the law, but held that this equality did not require the elimination of racial distinctions in public life. Segregation, the Court concluded, did not by itself amount to unlawful discrimination.6Bill of Rights Institute. Plessy v. Ferguson
The majority drew a sharp line between legal equality and what it called “social” equality. The Fourteenth Amendment enforced political rights, the Court reasoned, but “could not have been intended to abolish distinctions based upon color, or to enforce social, as distinguished from political, equality, or a commingling of the two races upon terms unsatisfactory to either.”6Bill of Rights Institute. Plessy v. Ferguson If Black citizens perceived the law as a mark of inferiority, the Court said, that was their interpretation, not the law’s intent. The opinion added: “If one race be inferior to the other socially, the Constitution of the United States cannot put them upon the same plane.”7National Archives. Plessy v. Ferguson (1896)
To decide whether the Separate Car Act was constitutional, the Court asked whether Louisiana had used its police power reasonably. In doing so, the legislature was “at liberty to act with reference to the established usages, customs, and traditions of the people, and with a view to the promotion of their comfort, and the preservation of the public peace and good order.”8United States District Court Eastern District of Louisiana. 163 U.S. 537 – Plessy v. Ferguson That standard tied constitutionality to local custom, and courts applying it in later years rarely found any segregation law unreasonable.
Justice Harlan’s Dissent
Justice John Marshall Harlan was the sole dissenter. His opinion is now considered one of the most important dissents in Supreme Court history. Harlan wrote that “in the eye of the law, there is in this country no superior, dominant, ruling class of citizens. There is no caste here. Our constitution is colorblind, and neither knows nor tolerates classes among citizens.”9Louis D. Brandeis School of Law Library. Harlan’s Great Dissent
Where the majority saw an administrative regulation, Harlan saw a law designed to humiliate. He called the forced separation of citizens on a public highway “a badge of servitude wholly inconsistent with the civil freedom and the equality before the law established by the Constitution.”9Louis D. Brandeis School of Law Library. Harlan’s Great Dissent The real purpose of the law, he argued, was to keep Black citizens in a subordinate position, and everyone understood that.
Harlan predicted the decision would age badly. “In my opinion, the judgment this day rendered will, in time, prove to be quite as pernicious as the decision made by this tribunal in the Dred Scott Case.”10Cornell Law Institute. Plessy v. Ferguson, 163 U.S. 537 The Dred Scott ruling of 1857, which held that Black people could not be citizens, was already recognized as a moral catastrophe. Harlan was telling his colleagues that history would judge them just as harshly.
How the Decision Enabled Jim Crow
Plessy did not create segregation in the South, but it removed the last constitutional barrier to making it official. State legislatures quickly passed laws requiring separation in virtually every public space. Schools were the most common target, and segregation soon extended to “most public and semi-public facilities” through the web of statutes known as Jim Crow laws.7National Archives. Plessy v. Ferguson (1896)
The Court itself extended the doctrine well beyond train cars. In 1899, it unanimously upheld racially segregated public schools in Cumming v. Board of Education of Richmond County. In 1908, it went further in Berea College v. Kentucky, affirming a state’s power to prohibit integrated education even at a private college that wanted to teach Black and white students together.11Berea College Special Collections and Archives. Kentucky Day Law and Berea College Collection Harlan dissented in that case as well.
In practice, “separate but equal” was enforced only on the separation side. Black schools, hospitals, and public facilities were almost always underfunded and inferior. States had little incentive to equalize conditions when no court was willing to hold them accountable, and the legal fiction that separate facilities could be equal persisted largely unchallenged for decades.
How Plessy Was Overturned
The campaign against Plessy began in the 1930s, when the NAACP launched a long-term legal effort to dismantle the separate but equal doctrine. Attorney Thurgood Marshall led the work, and Harlan’s dissent served as a touchstone throughout. Marshall read the dissent aloud to his legal team during difficult moments, and Harlan’s phrase “our constitution is colorblind” became his favorite quotation. According to fellow attorney Constance Baker Motley, Marshall admired Harlan’s courage more than that of any other justice because Harlan had been “a solitary and lonely figure writing for posterity.”9Louis D. Brandeis School of Law Library. Harlan’s Great Dissent
On May 17, 1954, the Supreme Court ruled unanimously in Brown v. Board of Education that “in the field of public education the doctrine of ‘separate but equal’ has no place. Separate educational facilities are inherently unequal.”12U.S. Courts. History – Brown v. Board of Education Re-enactment The Court held that segregation deprived minority children of equal educational opportunities even when the physical facilities were identical, because the act of separation itself inflicted psychological harm.13National Archives. Brown v. Board of Education
Brown struck down segregation in public schools, but the broader Jim Crow system stayed in place until Congress acted. The Civil Rights Act of 1964, signed on July 2 of that year, prohibited discrimination in public places, outlawed segregation in businesses and public facilities, and made employment discrimination illegal.14National Archives. Civil Rights Act Brown and the Civil Rights Act together dismantled the legal architecture Plessy had made possible.
The 2022 Pardon
On January 5, 2022, Louisiana Governor John Bel Edwards officially pardoned Homer Plessy for his 1892 arrest. The pardon was granted under the Avery C. Alexander Act, which allows pardons for people convicted under laws whose purpose was to maintain or enforce racial separation.15Law Library of Louisiana. Plessy v. Ferguson – Pardon The descendants of Homer Plessy and Judge John Howard Ferguson now work together through the Plessy and Ferguson Foundation on civil rights education.16The Plessy & Ferguson Initiative. The Plessy and Ferguson Initiative