In the case of Allen v. Georgia in 1896, the U.S Supreme Court overturned a conviction against an African American man named John Allen who was accused of murder by the state of Georgia. The court ruled that his constitutional rights had been violated due to racial discrimination during jury selection process. Despite being eligible for jury service under Georgia law, no black citizens were included on any grand or petit juries in Burke County where he was tried and convicted from 1868 until his trial in 1893. This exclusionary practice constituted a violation of equal protection clause under Fourteenth Amendment which guarantees all citizens equal protection under law regardless their race or color. Therefore, it rendered his indictment invalid and unconstitutional leading to reversal of his conviction.

The dissenting opinion in Allen v. Georgia, 1896, argued that the majority's decision to uphold a conviction based on evidence of prior crimes was fundamentally unjust and violated the defendant's constitutional rights. The dissent contended that allowing such evidence not only prejudiced the jury against the defendant but also undermined his right to be presumed innocent until proven guilty for each individual charge he faced. They believed this ruling set a dangerous precedent where defendants could be convicted based on their past actions rather than concrete proof of guilt in relation to specific charges at hand. Furthermore, they expressed concerns about potential abuses by prosecutors who might use this rule as an easy way to secure convictions without having solid evidence related directly to cases being tried.