Key Concepts in Criminal Law

Jan 22, 2025

Overview of Criminal Law

Reasons for Punishing Crime

Criminal punishments serve multiple purposes:

  • Retribution: Satisfies society's and victims' need for revenge.
  • Deterrence: Prevents future crimes by instilling fear of consequences.
    • Specific Deterrence: Prevents the individual from reoffending.
    • General Deterrence: Deters society by making an example of individuals.
  • Incapacitation: Removes criminals from society, preventing future offenses.
  • Rehabilitation: Aims to reform offenders through treatment and education.
  • Restitution: Compensates victims for their losses.

Components of Crimes

Criminal acts consist of:

  • Actus Reus (Guilty Act): The physical act of committing a crime.
  • Mens Rea (Guilty Mind): The mental intent to commit a crime.
    • Levels of Mens Rea:
      • Negligence: Fail to be aware of substantial risks.
      • Recklessness: Consciously disregard substantial risks.
      • Knowledge: Awareness of the consequences of actions.
      • Purpose: Intent to achieve a specific outcome.

Concurrence and Causation

  • Concurrence: Actus reus and mens rea must occur together.
  • Causation: Links the defendant's actions to the result, requiring both actual and proximate cause.

Constitutional Limitations

  • Principle of Legality: Conduct must be defined as criminal before being performed.
  • Ex Post Facto Laws: Laws cannot retroactively criminalize actions or increase punishments.
  • Punishing a Status: Unconstitutional to criminalize statuses like addiction, but related behaviors can be punished.
  • Cruel and Unusual Punishment: Prohibited by the Eighth Amendment, with specific criteria for determination.

Sources of Criminal Law

  • Constitutional Law: U.S. and state constitutions, which limit government punishments and protect rights.
  • Statutory Law: Written laws passed by legislative bodies.
  • Case Law: Judicial opinions and precedents.
  • Model Penal Code: A guide for states to standardize criminal laws.

Sentencing

  • Judges determine sentences within legal ranges; can be appealed.
  • Sentencing guidelines exist to reduce disparities but are advisory.
  • Factors considered include the nature of the crime and the defendant's history.
  • Death penalty requires jury decision.

Upcoming Module

Focus will shift to inchoate crimes, including attempt, conspiracy, solicitation, and accessory liability.