Supreme Court Case
Joseph Fisher
Plessey v. Ferguson (1896)
Black Patron on a train wanted to have some seat as white patron, since he paid same amount for ticket.
Ruling
Court Supported Segregation as long " separate but equal" applied
Social
social it was not fair that blacks could buy the same first class tickets as whites and not be able to sit were ever they pleased.
Politics
However, in the landmark decision Brown v. Board of Education (1954), the "separate but equal" doctrine was abruptly overturned when a unanimous Supreme Court ruled that segregating children by race in public schools was "inherently unequal" and violated the Fourteenth Amendment. Brown provided a major catalyst for the civil rights movement (1955-68), which won social, not just political and civil, racial equality before the law. After four decades, Justice Harlan's dissent became the law of the land. Following Brown, the Supreme Court has consistently ruled racial segregation in public settings to be unconstitutional.
Economy
After the trial this most likely boosted the US economy because blacks felt like they finally had equal rights on trains and other things which made more black ride trains.