That Supreme Court case in 1986 that stated separate but equal?

The Supreme Court case you’re referring to is likely Bowers v. Hardwick (1986), which dealt with the constitutionality of a Georgia sodomy law, but it did not address the "separate but equal" doctrine directly. The term "separate but equal" originates from Plessy v. Ferguson (1896), which upheld racial segregation under the premise that separate facilities for blacks and whites were constitutional as long as they were equal. This doctrine was eventually overturned by Brown v. Board of Education in 1954, which declared that separate educational facilities are inherently unequal and unconstitutional.