In the 1990 case Powers v. Ohio, the U.S. Supreme Court ruled that a white defendant's rights were violated when potential black jurors were excluded from his trial due to their race. The court held that peremptory challenges based on racial discrimination violate the Equal Protection Clause of the Fourteenth Amendment, even if it is not against one’s own racial group. This decision expanded upon previous rulings which had only protected defendants from exclusion of jurors who shared their own race (Batson v Kentucky). In this case, Powers was convicted for aggravated murder and attempted rape in an Ohio state court where prosecutors used peremptory strikes to exclude African American individuals from jury service. He appealed arguing these exclusions constituted discriminatory practices violating his constitutional rights under Batson ruling but was denied by lower courts as he himself wasn't African American. However, Supreme Court reversed those decisions stating any defendant has standing to challenge racially discriminatory use of peremptories whether or not they are part of excluded group because such practice harms both individual juror dignity and public confidence in justice system.

In the dissenting opinion for Powers v. Ohio, Justice Scalia argued that a white defendant does not have standing to challenge racial discrimination in jury selection against black jurors under the Equal Protection Clause of the Fourteenth Amendment. He contended that this clause was designed to protect individuals from state action discriminating against them, rather than allowing an individual to assert claims on behalf of third parties who are not before the court. Furthermore, he disagreed with majority's view that discriminatory jury selection practices harm all defendants and jurors by undermining public confidence in justice system; instead he believed it only harms those directly affected - potential jurors excluded because of their race and defendants of same race as excluded jurors. In his view, extending standing would lead to endless litigation over alleged violations which could be difficult or impossible for courts to resolve accurately.