Segregation in the United States, particularly racial segregation targeting African Americans, has deep roots but is most commonly associated with the formal Jim Crow era starting in the late 19th century. While informal practices existed during slavery and colonial times, legalized segregation ramped up after Reconstruction ended in 1877, with the Supreme Court's 1896 Plessy v. Ferguson decision cementing the "separate but equal" doctrine nationwide.

Historical Origins

Racial segregation traces back to the colonial era, where enslaved Black people faced de facto separation in housing and daily life, enforced by custom rather than law. Post-Civil War (1865), the brief Reconstruction period (1865-1877) saw some integration gains for freed Black Americans, but Southern states quickly pushed back with Black Codes in 1865-1866, restricting their rights and mandating separation in public spaces like trains and schools. By the 1870s, these evolved into full Jim Crow laws, segregating railroads, streetcars, theaters, and more across the South.

Key Milestone: Plessy v. Ferguson

In 1896, the U.S. Supreme Court ruled in Plessy v. Ferguson that "separate but equal" facilities were constitutional, greenlighting widespread segregation for nearly 60 years. Homer Plessy, a mixed-race man, challenged a Louisiana train car law, but the decision upheld racial division, spreading Jim Crow to public education (already segregated since the 1860s in many areas), water fountains, restrooms, and even telephone booths by the 1910s. This era peaked by 1910, with disenfranchisement laws barring most Black voters in the South.

Earlier and Global Context

  • Pre-1877 roots : De facto segregation during slavery (1619 onward) kept enslaved people apart from whites socially and residentially; Northern states post-1780s had laws barring free Blacks from certain jobs or schools.
  • International parallels : Similar systems existed in South Africa (apartheid formalized later in 1948) and colonial India, but U.S. segregation formalized earlier via state laws.
  • Northern vs. Southern : The South codified it via Jim Crow; the North relied more on housing covenants and redlining from the early 1900s.

End and Legacy

Segregation legally ended with Brown v. Board of Education (1954), striking down school separation, followed by the Civil Rights Act of 1964. Yet, de facto segregation persists today in housing and schools due to economic patterns—recent 2025 forum discussions even debate modern "highlighting" of Black authors in stores as a new form of soft segregation.

TL;DR : Formal U.S. segregation "started" post-Reconstruction (~1877), exploded with 1896's Plessy ruling, but informal roots go back centuries.

Information gathered from public forums or data available on the internet and portrayed here.