I'm seven eighths white! I shouldn't have to sit in a Jim Crow Car!
A man, Homer Plessy, was arrested for sitting in a car for white people, even though he was 7/8ths white
Sir, I am going to have to ask you to move to your car. This car is for white people.
I refuse to sit in a Jim Crow Car!
Plessy refused to sit in a Jim Crow Car, which was against Louisiana law. He was then arrested
I'm going to have to arrest you if you do not move to the car where you belong.
Judge Ferguson ruled against Plessy, saying that the law was just a "legal separation" and therefore did not violate his 13th or 14th amendments.
The law was just a legal separation. Therefore you are guilty because your rights were not violated
This case was used to decide other disputes like this, until it's reasoning was overturned in Brown v. Board of Education of Topeka in 1954
How it affected policies: This case would let states segregate races, as long as the accomodations were equal, because the court would rule it a legal separation. This way states could make segregate many public places, as long as it upheld the "separate but equal" doctrine. It legalized segregation.