In the case of Conley et al. v. Gibson et al., the Supreme Court ruled in favor of black railroad workers who alleged that their union, Brotherhood of Railway and Steamship Clerks, had discriminated against them based on race by failing to protect their jobs when positions were eliminated or reclassified. The court held that a complaint should not be dismissed unless it appears beyond doubt that the plaintiff can prove no set of facts in support of his claim which would entitle him to relief. This ruling established an important precedent for civil rights litigation as it lowered the threshold for bringing such cases before courts; plaintiffs only needed to provide a short and plain statement showing they are entitled to relief rather than detailed factual allegations.

In the dissenting opinion for Conley et al. v. Gibson et al., Justice Frankfurter, joined by Justice Burton, argued that the majority's decision to reverse and remand the case back to district court was a departure from established principles of pleading in federal courts. They contended that it is not enough for a complaint to simply state conclusions without providing factual allegations supporting those conclusions; rather, they believed that plaintiffs must provide specific facts showing their entitlement to relief. The dissenters expressed concern about potential abuse of process if complaints are allowed to proceed based on mere conclusory statements without any factual support or specificity required under Rule 8(a) of Federal Rules of Civil Procedure.