Frank Sinatra refused to play in Las Vegas, Nevada, hotels and casinos where African-Americans could not entertain nor patronize. He was such a money-maker for the entertainment industry and had such clout that his efforts played a major role in the desegregation of Nevada hotels and casinos in the 1960’s

Frank Sinatra (December 12, 1915 – May 14, 1998) – American singer and film actor.
http://en.wikipedia.org/wiki/Frank_Sinatra

Photo: [Public domain], via Wikimedia Commons