In Spano v. New York, the U.S. Supreme Court ruled in favor of Bruno Spano, overturning his murder conviction on the grounds that it was obtained through a violation of his constitutional rights under the Fourteenth Amendment's due process clause. The case centered around a confession made by Spano after he had been arrested and held for eight hours without access to legal counsel despite repeatedly requesting an attorney during this time period. During questioning, police used deceptive tactics including exploiting personal relationships to manipulate him into confessing guilt for killing a former boxing partner out of self-defense. The court found these actions coercive and manipulative enough to conclude that they violated Mr.Spano’s right against self-incrimination as well as his right to counsel - both protected under the Fifth and Sixth Amendments respectively but applicable here via incorporation through Fourteenth Amendment's Due Process Clause.

In the dissenting opinion for Spano v. New York, Justice Frankfurter argued that the majority's decision to overturn Spano's conviction based on a violation of his constitutional rights was misguided. He contended that while there may have been some irregularities in how police obtained Spano's confession, these did not necessarily amount to coercion or intimidation as defined by previous Supreme Court rulings. Furthermore, he pointed out that any potential harm done to Spano was mitigated by the fact that he had legal counsel present during his interrogation and voluntarily chose to confess despite this representation. Finally, Frankfurter criticized the majority for overstepping its bounds and intervening in a matter best left up to state courts.