In the Stein v. New York case of 1952, the U.S Supreme Court was tasked with determining whether confessions obtained from suspects who had been held incommunicado and subjected to prolonged questioning were admissible as evidence. The defendants, employees of a bakery in New York, were accused of stealing $8,000 from their employer's safe. They confessed after being detained for several hours without access to counsel or family members. At trial, they claimed that their confessions had been coerced by police officers through physical abuse and threats - allegations which the police denied. The court ruled 5-4 against Stein and his co-defendants upholding their convictions based on these confessions despite concerns about how they were obtained. The majority opinion argued that while coercive interrogation tactics are undesirable, it is often difficult to determine what constitutes coercion due to varying individual thresholds for psychological pressure. This ruling highlighted an ongoing debate within American jurisprudence regarding the balance between effective law enforcement practices and protection of individual rights during criminal investigations.

In the dissenting opinion for Stein v. New York, Justice Hugo Black argued that the confessions of the defendants were not voluntary and therefore should have been excluded from evidence. He emphasized that police interrogation methods used to obtain these confessions were inherently coercive, involving prolonged periods of questioning without access to counsel or family members. This coercion violated the Due Process Clause of the Fourteenth Amendment which guarantees fair treatment through normal judicial system. Furthermore, he criticized majority's reliance on state court findings about voluntariness as a violation of federal rights because it failed to independently evaluate whether due process was upheld in this case. In his view, such deference undermined Supreme Court’s role in protecting constitutional rights against state infringement.