Homer Adolph Plessy (born Homère Patris Plessy; 1858, 1862 or March 17, 1863 – March 1, 1925) was an American shoemaker and activist who was the plaintiff in the United States Supreme Court decision Plessy v. Ferguson. He staged an act of civil disobedience to challenge one of Louisiana's racial segregation laws and bring a test case to force the U.S. Supreme Court to rule on the constitutionality of segregation laws. The Court decided against Plessy. The resulting "separate but equal" legal doctrine determined that state-mandated segregation did not violate the Fourteenth Amendment to the United States Constitution as long as the facilities provided for both black and white people were putatively "equal". The legal precedent set by Plessy v. Ferguson lasted into the mid-20th century, until a series of landmark Supreme Court decisions concerning segregation, beginning with Brown v. Board of Education in 1954.
Plessy was born a free person of color in a family of French-speaking Louisiana Creole people. Growing up during the Reconstruction era, Plessy lived in a society in which black children attended integrated schools, black men could vote, and interracial marriage was legal. However, many of those civil rights were eroded following the withdrawal of U.S. federal troops from the former Confederate States of America in 1877. In the 1880s, Plessy became involved in political activism, and in 1892, the civil rights group Comité des Citoyens recruited him for an act of civil disobedience to challenge Louisiana's Separate Car Act, which required separate accommodations for black and white people on railroads. On June 7, 1892, Plessy purchased a ticket for a "whites only" first-class train coach, boarded the train, and was arrested by a private detective hired by the group. Judge John Howard Ferguson ruled against Plessy in a state criminal district court, upholding the law on the grounds that Louisiana had the right to regulate railroads within its borders. Plessy appealed to the U.S. Supreme Court, which heard the case four years later in 1896 and ruled 7–1 in favor of Louisiana, establishing the "separate but equal" doctrine as a legal basis for the Jim Crow laws which remained in effect into the 1950s and 1960s.
