👨‍⚖️Criminal Law Unit 9 – Criminal procedure

Criminal procedure is the backbone of the justice system, governing how crimes are investigated, prosecuted, and punished. It balances law enforcement powers with the rights of the accused, ensuring due process and fairness throughout the legal process. From arrest to appeal, criminal procedure encompasses key stages like booking, arraignment, trial, and sentencing. Constitutional protections, including the right to remain silent and the right to an attorney, safeguard defendants against government overreach and self-incrimination.

Key Concepts and Definitions

  • Criminal procedure encompasses the legal rules governing the process of investigating, prosecuting, and punishing individuals accused of committing crimes
  • Due process requires that the government respect all legal rights owed to a person and balances the power of law enforcement and the rights of the accused
  • Probable cause is a reasonable amount of suspicion, supported by circumstances sufficiently strong to justify a prudent and cautious person's belief that certain facts are probably true
  • Reasonable suspicion is a lower standard than probable cause and requires a well-founded suspicion that criminal activity may be occurring based on specific and articulable facts
  • Exclusionary rule prohibits the use of evidence obtained in violation of a defendant's constitutional rights, serving as a deterrent against police misconduct
  • Miranda warnings inform suspects of their rights to remain silent and to have an attorney present during questioning, protecting against self-incrimination
  • Plea bargaining involves negotiation between the prosecution and defense, where the defendant agrees to plead guilty in exchange for a reduced charge or sentence
  • Double jeopardy prevents an individual from being prosecuted more than once for the same offense, protecting against multiple punishments or trials

Constitutional Foundations

  • The Fourth Amendment protects against unreasonable searches and seizures, requiring probable cause for warrants
  • The Fifth Amendment provides due process rights, protects against self-incrimination, and prohibits double jeopardy
  • The Sixth Amendment ensures the right to a speedy and public trial, an impartial jury, and the assistance of counsel
  • The Eighth Amendment prohibits excessive bail, fines, and cruel and unusual punishment
  • The Fourteenth Amendment extends due process rights to state criminal proceedings and ensures equal protection under the law
  • Incorporation doctrine applies portions of the Bill of Rights to the states through the Fourteenth Amendment's Due Process Clause
  • Landmark Supreme Court cases (Mapp v. Ohio, Miranda v. Arizona) have shaped criminal procedure and established important constitutional principles

Stages of Criminal Procedure

  • Investigation involves gathering evidence, identifying suspects, and determining if a crime has been committed
  • Arrest occurs when a person is taken into custody based on probable cause that they committed a crime
  • Booking involves recording the suspect's personal information and the details of the alleged offense
  • Initial appearance is the suspect's first appearance before a judge, where they are informed of the charges and their rights
  • Preliminary hearing determines if there is sufficient evidence to proceed to trial
  • Arraignment is where the defendant enters a plea of guilty, not guilty, or no contest
  • Pre-trial motions can be filed by the defense or prosecution to exclude evidence, change venue, or dismiss charges
  • Trial is the formal legal proceeding where guilt or innocence is determined by a judge or jury
  • Sentencing occurs after a guilty verdict or plea, where the appropriate punishment is imposed
  • Appeals allow the defense to challenge the conviction or sentence in a higher court

Rights of the Accused

  • Presumption of innocence places the burden of proof on the prosecution to prove guilt beyond a reasonable doubt
  • Right to remain silent protects against self-incrimination during police questioning and at trial
  • Right to an attorney ensures legal representation during critical stages of the criminal process
  • Right to a speedy trial prevents unreasonable delays that could hinder the defense
  • Right to a public trial ensures transparency and accountability in the criminal justice system
  • Right to an impartial jury requires jurors to be unbiased and base their decision solely on the evidence presented
  • Right to confront witnesses allows the defense to cross-examine and challenge the credibility of prosecution witnesses
  • Protection against double jeopardy prevents multiple prosecutions for the same offense

Law Enforcement Powers and Limitations

  • Police may conduct searches with a warrant based on probable cause or under specific exceptions (exigent circumstances, plain view)
  • Stop and frisk allows police to briefly detain and pat down a person based on reasonable suspicion of criminal activity and weapon possession
  • Arrests must be based on probable cause, and suspects must be informed of their Miranda rights before custodial interrogation
  • Police must respect an individual's right to privacy and obtain warrants for searches of homes or private property, with limited exceptions
  • Entrapment defense may apply if law enforcement induces a person to commit a crime they would not have otherwise committed
  • Police misconduct (excessive force, coerced confessions) can lead to the exclusion of evidence and potential civil liability
  • Racial profiling and discriminatory practices are prohibited under the Equal Protection Clause of the Fourteenth Amendment

Pre-Trial Procedures

  • Grand jury proceedings determine if there is sufficient evidence to bring criminal charges, conducted in secrecy without the presence of the defendant or their counsel
  • Indictment is a formal accusation issued by a grand jury, indicating probable cause to believe the defendant committed the alleged offense
  • Discovery allows the defense and prosecution to exchange information and evidence before trial, promoting fairness and efficiency
  • Plea bargaining negotiations can result in reduced charges or sentences in exchange for a guilty plea, avoiding the uncertainty and costs of a trial
  • Pre-trial motions can challenge the admissibility of evidence (suppress illegally obtained evidence), request a change of venue, or seek dismissal of charges
  • Bail allows the defendant to be released from custody pending trial, ensuring their appearance in court while presuming innocence
  • Speedy Trial Act sets time limits for the various stages of federal criminal proceedings to protect the defendant's right to a speedy trial

Trial Process

  • Jury selection involves questioning potential jurors to ensure impartiality and eliminate bias (voir dire process)
  • Opening statements allow the prosecution and defense to outline their case and preview the evidence they will present
  • Prosecution presents evidence first, calling witnesses and introducing exhibits to prove the defendant's guilt beyond a reasonable doubt
  • Cross-examination allows the defense to question prosecution witnesses and challenge their credibility or the reliability of their testimony
  • Defense may present evidence to refute the prosecution's case, establish an alibi, or raise affirmative defenses (self-defense, insanity)
  • Closing arguments summarize the evidence and argue why the jury should find the defendant guilty or not guilty
  • Jury instructions provide the legal framework for the jury to evaluate the evidence and reach a verdict
  • Deliberation occurs when the jury discusses the case in private to determine if the prosecution has met its burden of proof

Post-Trial Procedures and Appeals

  • Sentencing hearing allows the judge to consider aggravating and mitigating factors, victim impact statements, and sentencing guidelines to determine the appropriate punishment
  • Presentence investigation report provides background information on the defendant to assist the judge in making a sentencing decision
  • Appeals can challenge the conviction or sentence based on legal errors, insufficient evidence, or constitutional violations
  • Appellate courts review the trial record and legal arguments to determine if reversible error occurred
  • Habeas corpus petitions can be filed by prisoners to challenge the legality of their detention or the constitutionality of their conviction or sentence
  • Clemency or pardon may be granted by the executive branch to reduce or commute a sentence, or to restore certain rights after a conviction
  • Expungement or sealing of criminal records can help individuals with past convictions in employment, housing, and other areas

Ethical Considerations in Criminal Procedure

  • Prosecutors have a duty to seek justice, not merely convict, and must disclose exculpatory evidence to the defense (Brady v. Maryland)
  • Defense attorneys must provide effective assistance of counsel and zealously advocate for their client's interests within the bounds of the law
  • Judicial impartiality and independence are essential to ensure fair and unbiased proceedings
  • Confidentiality of attorney-client communications is protected to foster open and honest dialogue between defendants and their counsel
  • Perjury and false testimony undermine the integrity of the criminal justice system and can result in criminal charges
  • Plea bargaining must be voluntary and not coerced, with defendants fully informed of the consequences of pleading guilty
  • Ethical rules govern the conduct of attorneys, including conflicts of interest, candor to the tribunal, and fairness in dealing with opposing counsel
  • Balancing the rights of the accused with the interests of public safety and the administration of justice is an ongoing challenge in criminal procedure


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© 2024 Fiveable Inc. All rights reserved.
AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.