Plessy vs Ferguson was a landmark U.S. Supreme Court decision that upheld the constitutionality of racial segregation under the “separate but equal” doctrine.
The case stemmed from an 1892 incident in which African American train passenger Homer Plessy refused to sit in a car for blacks.
providing for “equal but separate accommodations for the white and colored races” on its railroad cars is constitutional.
The segregated law violated the Equal Protection Clause of the Fourteenth Amendment, which forbids states from denying "to any person within their jurisdiction the equal protection of the laws," as well as the Thirteenth Amendment, which banned slavery.
This Supreme Court judgement fueled more discrimination in the us society