Plessy v. Ferguson
Homer Adolph Plessy was seven eights white and took a seat in the whites only section in a louisiana train and refused to move back to the blacks only section.
Louisiana law mandates racial segergation on all of its trains, the constitutional question is that is this is constitutional or not.
The decision was 7 for Ferguson and 1 against. It was decided that the state law was within its boundaries and that seperate but equal is constitutional.