Answer: Plessy V Ferguson
Explanation: in 1896 the Supreme Court ruled in Plessy V Ferguson that states had the right to pass laws segregating different races just as long as the different facilities set up for one race Vs another were equal in quality. In 1954 Plessy was overturned by Brown V Board of Education which decided that since the separate facilities set up for minorities were not equal to the ones available to whites, the states had no right to pass or enforce laws that segregated races.