Plessy v. Ferguson

The case arose from a Louisiana law requiring separate railway cars for Black and white passengers. The law formed part of the broader segregation regime that followed the end of Reconstruction, when Southern states restricted Black civil and political rights through statutes, local practices, and violence.¹ The New Orleans-based Citizens’ Committee organized a test case in 1892. Homer Plessy, who was classified as Black under Louisiana law despite being seven-eighths white, deliberately sat in a whites-only railroad car. After refusing to move, he was arrested and prosecuted.

Plessy challenged the statute under the Thirteenth and Fourteenth Amendments. His lawyers argued that enforced separation branded Black citizens with a badge of inferiority and denied them equal protection. The case reached the Supreme Court after Louisiana courts rejected his challenge, placing the constitutional status of segregation directly before the justices.

The Court held that racial separation was constitutional if ostensibly equal accommodations were provided. In an opinion by Justice Henry Billings Brown, the 7–1 majority accepted the state’s asserted authority to regulate railway arrangements and declared that segregation did not necessarily violate the Fourteenth Amendment’s Equal Protection Clause.² The ruling introduced the phrase “separate but equal” as a governing constitutional principle, although the exact phrase had appeared in earlier legal arguments and state policies.

The majority distinguished legal separation from the legal subordination of one race to another. It reasoned that any sense of inferiority resulting from segregation was not created by the statute itself but by the interpretation placed upon it by Black citizens. Justice John Marshall Harlan dissented, arguing that the Constitution was “color-blind” and that the decision would become as harmful as the Dred Scott decision had been. Justice David Josiah Brewer did not participate.

The decision gave segregation a powerful constitutional shield, but it did not itself create every feature of Jim Crow. States and local governments used it to sustain separate schools, transportation, public facilities, and other institutions, while routinely providing Black communities with inferior resources. Segregation was also reinforced by disenfranchisement, racial terror, restrictive labor arrangements, and discriminatory administration.³

“Separate but equal” was therefore largely unequal in practice. The Court occasionally required genuinely comparable treatment, including in Missouri ex rel. Gaines v. Canada (1938), which held that Missouri could not provide legal education to white students while sending Black students elsewhere if it offered no equivalent in-state facility.⁴ Later cases concerning graduate education and public schools further weakened the doctrine. The ruling’s effects extended beyond railways because it supplied a general constitutional rationale for state-enforced racial classification.

The case was carefully engineered as a test of segregation rather than a spontaneous dispute. The Citizens’ Committee selected Plessy because his appearance could expose the arbitrariness of Louisiana’s racial classification, and railway detective Claude B. Bowers was involved in the planned arrest. The committee also raised funds and coordinated litigation with civil-rights lawyers, making the case an early example of strategic constitutional test-case advocacy.

Plessy’s conviction was affirmed by the Supreme Court, but the decision did not end legal challenges to segregation. In Brown v. Board of Education (1954), the Court held that racial separation in public schools was inherently unequal and rejected the educational application of Plessy.⁵ The Court later described Plessy as wrongly decided in Adarand Constructors, Inc. v. Peña (1995), while formally overruling its constitutional approach in the school-segregation context through Brown.⁶ In 2021, Louisiana formally posthumously pardoned Plessy, though the pardon did not alter the historical judgment or the legal status of the case.

Separate but equal

The doctrine that racial separation was constitutional when supposedly comparable facilities or services were provided.

Equal Protection Clause

The Fourteenth Amendment provision barring states from denying persons the equal protection of the laws.

Jim Crow

The system of laws, customs, and institutions enforcing racial segregation and Black subordination, especially in the United States South.

Test case

A deliberately selected lawsuit intended to resolve an important legal or constitutional question.