Jim Crow laws were state and local laws that enforced racial segregation in the Southern United States. All were enacted in the late 19th and early 20th centuries by white Democratic-dominated state legislatures after the Reconstruction period. The laws were enforced until 1965. In practice, Jim Crow laws mandated racial segregation in all public facilities in the states of the former Confederate States of America and other states, starting in the 1870s and 1880s. Jim Crow laws were upheld in 1896 in the case of Plessy vs. Ferguson, in which the U.S. Supreme Court laid out its "separate but equal" legal doctrine for facilities for African Americans. Moreover, public education had essentially been segregated since its establishment in most of the South after the Civil War (1861–65).
The legal principle of "separate but equal" racial segregation was extended to public facilities and transportation, including the coaches of interstate trains and buses. Facilities for African Americans and Native Americans were consistently inferior and underfunded compared to the facilities for white Americans; sometimes, there were no facilities for people of color. As a body of law, Jim Crow institutionalized economic, educational, and social disadvantages for African Americans and other people of color living in the South.
Jim Crow laws and Jim Crow state constitutional provisions mandated the segregation of public schools, public places, and public transportation, and the segregation of restrooms, restaurants, and drinking fountains for whites and blacks. The U.S. military was already segregated. President Woodrow Wilson, a Southern Democrat, initiated the segregation of federal workplaces in 1913.
In 1954, segregation of public schools (state-sponsored) was declared unconstitutional by the U.S. Supreme Court under Chief Justice Earl Warren in landmark case Brown v. Board of Education. In some states, it took many years to implement this decision, while the Warren Court continued to rule against the Jim Crow laws in other cases such as Heart of Atlanta Motel, Inc. v. United States (1964). Generally, the remaining Jim Crow laws were overruled by the Civil Rights Act of 1964 and the Voting Rights Act of 1965.
The phrase "Jim Crow Law" can be found as early as 1892 in the title of a New York Times article about Louisiana requiring segregated railroad cars. The origin of the phrase "Jim Crow" has often been attributed to "Jump Jim Crow", a song-and-dance caricature of blacks performed by white actor Thomas D. Rice in blackface, which first surfaced in 1828 and was used to satirize Andrew Jackson's populist policies. As a result of Rice's fame, "Jim Crow" by 1838 had become a pejorative expression meaning "Negro". When southern legislatures passed laws of racial segregation directed against blacks at the end of the 19th century, these statutes became known as Jim Crow laws.