(1896) U.S. Supreme Court decision that established the legality of racial segregation so long as facilities were "separate but equal.
" The case involved a challenge to Louisiana laws requiring separate railcars for African Americans and whites. Though the laws were upheld by a majority of 8 to 1, a famous dissent by John Marshall Harlan advanced the idea that the U.S. Constitution is "color-blind." The Plessy decision was overturned in 1954 by Brown v. Board of Education .