What are the issues in plessy Ferguson case?

The Plessy v. Ferguson case of 1896 centered around racial segregation laws, specifically the "Separate but Equal" doctrine. Homer Plessy, who was of mixed race, challenged Louisiana's segregation law by sitting in a "whites-only" train car. The Supreme Court upheld the law, ruling that racial segregation was constitutional as long as the separate facilities were equal, effectively legalizing racial discrimination and reinforcing systemic racism in the United States for decades. This ruling set a precedent that was not overturned until Brown v. Board of Education in 1954.