In 1896, the U.S. Supreme Court approved racial segregation under the separate but equal doctrine. The decision, upheld a Louisiana law barring blacks from certain areas of passenger cars (segregation), was based on the notion that equal protection was not violated as long as reasonably adequate accommodations were provided for each group.
Richert, Lucas Paul. "Segregation allowed by Supreme Court". The Literary Encyclopedia. First published 01 February 2009
[http://www.litencyc.com/php/stopics.php?rec=true&UID=5990, accessed 29 September 2016.]