High Quality Content by WIKIPEDIA articles! Plessy v. Ferguson, 163 U.S. 537 (1896), is a landmark United States Supreme Court decision in the jurisprudence of the United States, upholding the constitutionality of racial segregation even in public accommodations (particularly railroads), under the doctrine of "separate but equal".The decision was handed down by a vote of 7 to 1 (Justice David Josiah Brewer did not participate in the decision), with the majority opinion written by Justice Henry Billings Brown and the dissent written by Justice John Marshall Harlan. "Separate but equal" remained standard doctrine in U.S. law until its repudiation in the 1954 Supreme Court decision Brown v. Board of Education.