The insanity defense, also known as the mental disorder defense, is an affirmative defense by excuse in a criminal case, arguing that the defendant is not responsible for his actions due to an episodic or persistent psychiatric disease at the time of the criminal act. This is contrasted with an excuse of provocation, in which the defendant is responsible, but the responsibility is lessened due to a temporary mental state. It is also contrasted with a finding that a defendant cannot stand trial in a criminal case because a mental disease prevents him from effectively assisting counsel, from a civil finding in trusts and estates where a will is nullified because it was made when a mental disorder prevented a testator from recognizing the natural objects of his bounty, and from involuntary civil commitment to a mental institution, when anyone is found to be gravely disabled or to be a danger to himself or to others.
In the United States, the Miranda warning is a type of notification customarily given by police to criminal suspects in police custody advising them of their right to silence; that is, their right to refuse to answer questions or provide information to law enforcement or other officials. These rights are often referred to as Miranda rights. The purpose of such notification is to preserve the admissibility of their statements made during custodial interrogation in later criminal proceedings.
Gideon v. Wainwright, 372 U.S. 335 (1963), was a landmark U.S. Supreme Court decision in which the Court ruled that the Sixth Amendment of the U.S. Constitution requires U.S. states to provide attorneys to criminal defendants who are unable to afford their own. The case extended the right to counsel, which had been found under the Fifth and Sixth Amendments to impose requirements on the federal government, by imposing those requirements upon the states as well.
The right to silence is a legal principle which guarantees any individual the right to refuse to answer questions from law enforcement officers or court officials. It is a legal right recognized, explicitly or by convention, in many of the world's legal systems.
Clarence Earl Gideon was a poor drifter accused in a Florida state court of felony theft. While in prison, he appealed his case to the US Supreme Court, resulting in the landmark 1963 decision Gideon v. Wainwright holding that a criminal defendant who cannot afford to hire a lawyer must be provided one at no cost.
Self-incrimination is the act of exposing oneself generally, by making a statement, "to an accusation or charge of crime; to involve oneself or another [person] in a criminal prosecution or the danger thereof"..
Edwards v. South Carolina, 372 U.S. 229 (1963), was a landmark decision of the US Supreme Court ruling that the First and Fourteenth Amendments to the U.S. Constitution forbade state government officials to force a crowd to disperse when they are otherwise legally marching in front of a state house.
Benton v. Maryland, 395 U.S. 784 (1969), is a Supreme Court of the United States decision concerning double jeopardy. Benton ruled that the Double Jeopardy Clause of the Fifth Amendment applies to the states. In doing so, Benton expressly overruled Palko v. Connecticut.
Brown v. Mississippi, 297 U.S. 278 (1936), was a United States Supreme Court case that ruled that a defendant's involuntary confession that is extracted by police violence cannot be entered as evidence and violates the Due Process Clause of the Fourteenth Amendment.
Massiah v. United States, 377 U.S. 201 (1964), was a case in which the Supreme Court of the United States held that the Sixth Amendment to the United States Constitution prohibits the government from eliciting statements from the defendant about themselves after the point that the Sixth Amendment right to counsel attaches.
Colorado v. Connelly, 479 U.S. 157 (1986), was a U.S. Supreme Court case that was initiated by Francis Connelly, who insisted that his schizophrenic episode rendered him incompetent, nullifying his waiver of his Miranda rights.
Garrity v. New Jersey, 385 U.S. 493 (1967), was a case in which the Supreme Court of the United States held that law enforcement officers and other public employees have the right to be free from compulsory self-incrimination. It gave birth to the Garrity warning, which is administered by investigators to suspects in internal and administrative investigations in a similar manner as the Miranda warning is administered to suspects in criminal investigations.
The Fifth Amendment to the United States Constitution addresses criminal procedure and other aspects of the Constitution. It was ratified, along with nine other articles, in 1791 as part of the Bill of Rights. The Fifth Amendment applies to every level of the government, including the federal, state, and local levels, in regard to a US citizen or resident of the US. The Supreme Court furthered the protections of this amendment through the Due Process Clause of the Fourteenth Amendment.
Barefoot v. Estelle, 463 U.S. 880 (1983), is a United States Supreme Court case. The Court ruled on the admissibility of clinical opinions given by two psychiatrists hired by the prosecution in answer to hypothetical questions regarding the defendant's future dangerousness and the likelihood that he would present a continuing threat to society in this Texas death penalty case. The American Psychiatric Association submitted an amicus curiae brief in support of the defendant's position that such testimony should be inadmissible and urging curtailment of psychiatric testimony regarding future dangerousness and a prohibition of such testimony based on hypothetical data.
Heath v. Alabama, 474 U.S. 82 (1985), is a case in which the United States Supreme Court ruled that, because of the doctrine of "dual sovereignty", the double jeopardy clause of the Fifth Amendment to the Constitution does not prohibit one state from prosecuting and punishing somebody for an act of which they had already been convicted of and sentenced for in another state.
Doyle v. Ohio, 426 U.S. 610 (1976), is a United States Supreme Court case regarding the Due Process rights of the Fourteenth Amendment.
Snyder v. Louisiana, 552 U.S. 472 (2008), was a United States Supreme Court case about racial issues in jury selection in death penalty cases. Justice Samuel Alito, writing for the 7–2 majority, ruled that the prosecutor's use of peremptory strikes to remove African American jurors violated the Court's earlier holding in Batson v. Kentucky. Justice Clarence Thomas dissented.
Berghuis v. Thompkins, 560 U.S. 370 (2010), is a landmark decision by the United States Supreme Court in which the Court considered the position of a suspect who understands their right to remain silent under Miranda v. Arizona and is aware that they have the right to remain silent, but does not explicitly invoke or waive the right.
Wainwright vs. Witt, 470 U.S. 1039 (1985), was a U.S. Supreme Court case concerning a criminal defendant, Johnny Paul Witt, who argued that his Sixth and Fourteenth Amendment rights were violated when he was sentenced to death for first degree murder by the state of Florida. He argued that the trial court had unconstitutionally hand-picked a jury during the voir dire process. This was because certain people were excused from the jury because they admitted pre-trial, that their decision of guilty or not guilty toward capital punishment would be swayed due to personal or religious beliefs.
Napue v. Illinois, 360 U.S. 264 (1959), was a United States Supreme Court case in which the Court held that the knowing use of false testimony by a prosecutor in a criminal case violates the Due Process Clause of the Fourteenth Amendment to the United States Constitution, even if the testimony affects only the credibility of the witness and does not directly relate to the innocence or guilt of the defendant.
