Brown v. Board of Education
Brown v. Board of Education of Topeka, 347 U.S. 483 (1954), is a landmark decision of the United States Supreme Court that ruled that U.S. state laws establishing racial segregation in public schools violate the Equal Protection Clause of the Fourteenth Amendment, even if the segregated facilities are equal in quality.
Source: Wikipedia — Brown v. Board of Education (CC BY-SA 4.0)