Final answer:
Chief Justice Earl Warren's quote is from the Supreme Court case Brown v. Board of Education, which overturned the Plessy v. Ferguson ruling and deemed segregated schools unconstitutional.
Step-by-step explanation:
The quote cited by Chief Justice Earl Warren comes from the landmark Supreme Court case, Brown v. Board of Education of Topeka, the 1954 decision that ruled segregated schools unconstitutional and overturned the Plessy v. Ferguson ruling of 1896. The Plessy v. Ferguson case had established the doctrine of "separate but equal," which the Brown ruling effectively dismantled, stating that "separate educational facilities are inherently unequal." This decision marked a crucial victory in the civil rights movement and redefined public education in the United States by mandating the integration of schools.
The ruling in question overturns the decision in the Plessy v. Ferguson case. In the case of Brown v. Board of Education in 1954, the Supreme Court unanimously declared that separate educational facilities based on race were inherently unequal and violated the Fourteenth Amendment's equal protection clause. This landmark decision effectively ended legal segregation in public schools.