Which Supreme Court case found that the Fourteenth Amendment served to protect political and civil, but not social, rights?

Question

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Plessy v. Ferguson established the doctrine of "separate but equal" and found that the Fourteenth Amendment did not prohibit racial segregation as long as the separate facilities were deemed equal. This decision effectively denied social rights to African Americans and upheld segregation in public places such as schools and transportation.

Which Supreme Court Case Found That the Fourteenth Amendment Served