Help y’all this don’t make sense !!??

Railroad cars

Step-by-step explanation:

This law required black passengers to be seated in separate passenger cars on Louisiana railroads from the white travelers. Plessy was charged with boarding a "whites-only" car, Plessy pleaded not guilty, contending that the law was unconstitutional. He was convicted at the district level. Plessy appealed his case but the conviction was sustained by the Louisiana Supreme Court.