The doctrine that racial segregation is constitutional as long as the facilities provided for blacks and whites are roughly equal. This doctrine was long used to support segregation in the public schools and a variety of public facilities, such as transportation and restaurants, where the facilities and services for blacks were often clearly inferior. For decades, the Supreme Court refused to rule the separate but equal doctrine unconstitutional, on the grounds that such civil rights issues were the responsibility of the states. In the decision of Brown versus Board of Education, in 1954, the Supreme Court unanimously ruled separate but equal schools unconstitutional. This ruling was followed by several civil rights laws in the 1960s. (See also Plessy versus Ferguson.)