Duncan v. Louisiana
Does the Sixth Amendment's guarantee of the right to a trial by jury in criminal cases apply to state prosecutions through the Due Process Clause of the Fourteenth Amendment?
The Decision
7-2 decision · Opinion by Byron R. White · 1968
Majority Opinion— Byron R. Whiteconcurring ↓dissent ↓
In a 7–2 decision authored by Justice Byron R. White, the Supreme Court ruled in favor of Gary Duncan, holding that the Fourteenth Amendment's Due Process Clause guarantees the right to a jury trial in state criminal proceedings for serious offenses. The Court reversed Duncan's conviction and declared that Louisiana's refusal to provide him a jury trial was unconstitutional.
Justice White's majority opinion reasoned that the right to a jury trial in criminal cases is 'fundamental to the American scheme of justice.' The Court examined the long history of jury trials in Anglo-American law, noting that the right was considered essential by the framers of the Constitution, enshrined in both the body of the Constitution and the Bill of Rights, and protected in the constitutions of every state that had joined the Union. Because of its deep roots and critical importance, the Court concluded it fell squarely within the protections that the Fourteenth Amendment made applicable to the states.
The majority rejected Louisiana's argument that due process could be satisfied without a jury as long as some form of fair trial was provided. The Court explained that it was moving away from a case-by-case approach to incorporation and instead embracing the principle that if a right in the Bill of Rights is fundamental to ordered liberty, it applies to the states in full. The jury trial right met that test because it serves as a crucial check against government oppression — protecting defendants from overzealous prosecutors and biased or eccentric judges.
The Court also addressed the question of what constitutes a 'serious' offense requiring a jury trial. While declining to draw a bright line, the majority made clear that a crime punishable by up to two years in prison — like the simple battery charge Duncan faced — is undoubtedly serious enough to trigger the right. The opinion noted that so-called 'petty' offenses might not require a jury, but that the possible penalty Duncan faced put his case well beyond that category. The decision was a landmark moment in the Court's incorporation doctrine, firmly establishing that Americans in every state are entitled to a jury trial when they face significant criminal punishment.
Concurring Opinions
Justice Hugo Black, joined by Justice William O. Douglas, wrote a concurrence arguing that the Fourteenth Amendment was intended to incorporate the entire Bill of Rights against the states — a position known as 'total incorporation' — going further than the majority's selective incorporation approach. Justice Abe Fortas also wrote a concurrence agreeing that the jury trial right applies to the states but cautioning that the Court should not necessarily require states to adopt every specific detail of federal jury practice, such as the traditional requirement of twelve jurors or unanimous verdicts.
Dissenting Opinions
John Marshall Harlan IIjoined by Potter Stewart
Justice Harlan argued that the Due Process Clause of the Fourteenth Amendment does not automatically incorporate specific provisions of the Bill of Rights and impose them on the states. He believed the proper question was whether Louisiana's trial procedure, taken as a whole, was fundamentally fair — not whether it matched the federal model point by point.
- The Fourteenth Amendment was never intended to make every provision of the Bill of Rights binding on the states; instead, due process should be evaluated based on whether a state's overall system provides fundamental fairness.
- Forcing states to adopt identical procedures to the federal system undermines the principles of federalism by stripping states of their traditional authority to experiment with different approaches to criminal justice.
- The incorporation approach adopted by the majority threatens to be a one-way ratchet that rigidly imposes federal standards on states without allowing for the diversity of legal traditions across the country.
Background & Facts
In October 1966, Gary Duncan, a 19-year-old Black man, was driving near a public school in Plaquemines Parish, Louisiana, when he saw two of his younger cousins — who were among the first Black students to attend a previously all-white school during desegregation — on the side of the road speaking with a group of white boys. Worried that a confrontation might be developing, Duncan pulled over to intervene. During the brief encounter, Duncan touched or slapped one of the white boys, Herman Landry, on the elbow or arm. The exact nature of the contact was disputed at trial, but what followed was not: Duncan was arrested and charged with simple battery, a misdemeanor under Louisiana law.
The charge of simple battery in Louisiana carried a maximum punishment of two years in parish prison and a $300 fine. Duncan's attorney requested a trial by jury, believing his client deserved the chance to have a group of his peers weigh the conflicting accounts of what happened. However, the trial court denied the request. Under Louisiana's state constitution at the time, jury trials were only guaranteed in cases punishable by capital punishment or imprisonment at hard labor. Because simple battery was a misdemeanor — even though it carried a possible two-year prison sentence — the state deemed Duncan ineligible for a jury trial.
Duncan was tried before a judge alone, convicted, and sentenced to 60 days in jail and a $150 fine. His attorney appealed, arguing that the denial of a jury trial violated the United States Constitution. The Louisiana Supreme Court declined to review the case, finding no error in the lower court's ruling. Many legal observers at the time recognized the case as arising from the deep racial tensions of desegregation-era Louisiana, and that the local judicial and political apparatus in Plaquemines Parish — then controlled by a powerful segregationist political boss — was not known for even-handed treatment of Black residents.
Duncan then petitioned the United States Supreme Court, which agreed to hear the case. The central constitutional question was a big one that went far beyond Gary Duncan's slap on the arm: whether the right to a jury trial, guaranteed against the federal government by the Sixth Amendment, was so fundamental to American justice that it must also be enforced against state governments through the Fourteenth Amendment's Due Process Clause. The case arrived at the Court during a period when the Justices were actively deciding which protections in the Bill of Rights applied to the states — a legal process known as 'incorporation.'
The Arguments
Duncan argued that the Sixth Amendment right to a jury trial is a fundamental right that applies to state criminal prosecutions through the Fourteenth Amendment's guarantee of due process. He contended that being tried before a single judge for an offense carrying up to two years in prison, with no option for a jury, violated his constitutional rights.
- The right to trial by jury in criminal cases has deep roots in American and English legal tradition and is essential to protecting individuals from government overreach.
- A crime punishable by up to two years of imprisonment is serious enough to trigger the right to a jury trial, regardless of how a state classifies the offense.
- Without the protection of a jury, individuals in racially charged communities face the risk of biased outcomes when a single judge decides their fate.
Louisiana argued that the Sixth Amendment's jury trial provision was a restriction only on the federal government and did not apply to the states. The state maintained that it had the sovereign authority to set its own rules for when jury trials are required and that due process did not demand a jury in every criminal case.
- Under longstanding principles of federalism, states retain the power to structure their own court systems and trial procedures without federal interference.
- The Fourteenth Amendment's Due Process Clause requires fundamental fairness but does not automatically import every specific procedural guarantee from the Bill of Rights into state law.
- Louisiana's system, which reserved jury trials for the most serious offenses, provided adequate procedural protections for defendants charged with minor crimes like simple battery.