In Buchanan v. Warley, the U.S. Supreme Court begins to reverse the landmark Plessy v. Ferguson decision of 1896. According to Realtor® Online Magazine the Buchanan ruling outlaws racial segregation ordinances, which set aside certain blocks where only African-Americans can live. (In Plessy v. Ferguson, the Supreme Court established the "separate but equal" doctrine for railway travel. The doctrine was soon adapted more broadly to race relations and was used by some real estate practitioners to justify steering homebuyers to certain neighborhoods.)