What court case has not been overturned?

One significant court case that has not been overturned is Brown v. Board of Education (1954), where the Supreme Court ruled that racial segregation in public schools was unconstitutional. This landmark decision effectively overturned the "separate but equal" doctrine established by Plessy v. Ferguson (1896). Brown v. Board remains a cornerstone of civil rights law in the United States and has not been reversed or overturned. Its principles continue to influence education and civil rights legislation.