Thurgood Marshall and Oliver Hill were two lawyers in the Brown vs. Board of Education case. In this case, Brown was fighting to end school segregation. Marshall and Hill helped Brown win this Supreme Court case and helped end school segregation.
This win in the Brown vs. Board of Education case stated that the idea of "separate but equal," established in the Plessy vs. Ferguson Supreme Court case, was unconstitutional. This separate but equal law violated the 14th amendment.