Legal Foundations

Legal Foundations

1. Chapter 1 – The Nature and History of Criminal Law

   • Federalism
     • Definition: Division of power between the federal government and the states.
     • Relation: Federal law applies nationwide; Massachusetts law applies within the state.
   • Separation of Powers
     • Definition: Legislative makes laws, executive enforces them, judiciary interprets them.
     • Relation: Works with federalism to prevent abuse of power; courts check law enforcement when enforcing laws.
   • Rule of Law
     • Definition: Everyone, including government officials, is subject to the law.
     • Relation: Connects to all other branches because it ensures laws (federal, state, or local) are applied fairly and equally.
   • Sources of Criminal Law
     • Definition: Origins of legal rules (constitution, statutes, case law, regulations, ordinances).
     • Relation: Provides the legal framework for all criminal liability. Connects directly to Massachusetts examples.
     • Constitution – Massachusetts Constitution
       • https://malegislature.gov/Laws/Constitution
         • The Massachusetts Constitution explains the structure of government and guarantees rights. It fits this category because it serves as the supreme source of Massachusetts law, forming the foundation for all other legal authority in the state.
     • Statute – Massachusetts General Laws, Chapter 265: Crimes Against the Person
       • https://malegislature.gov/Laws/GeneralLaws/PartIV/TitleI/Chapter265
         • This statute defines crimes like assault, homicide, and kidnapping. It fits the statute category because it demonstrates how Massachusetts lawmakers legislate criminal conduct through codified laws.
     • Case Law – Commonwealth v. Levesque (2002)
       • https://law.justia.com/cases/massachusetts/supreme-court/volumes/436/436mass443.html
         • This Massachusetts Supreme Judicial Court case held defendants criminally liable for failing to act, establishing manslaughter by omission. It fits the case law category because it shows how judicial decisions interpret and apply statutes.
     • Administrative Regulation – 940 CMR 3.00: Unfair & Deceptive Practices
       • https://www.mass.gov/doc/940-cmr-3-consumer-protection-general-regulations/download
         • Issued by the Massachusetts Attorney General’s Office, this regulation enforces consumer protection and prohibits unfair or deceptive business practices. It fits this category because administrative agencies create and enforce these rules.
     • Ordinance – Boston Municipal Code – Noise Ordinance
       • https://www.boston.gov/departments/environment/air-pollution-control-commission/noise-boston
         • This ordinance restricts excessive noise levels in Boston to protect public order and residents’ quality of life. It fits the ordinance category because it is a local law passed by a city government.
   • Model Penal Code (MPC)
     • Definition: A model set of laws designed to standardize criminal law across states.
     • Relation: Bridges U.S. and state systems by guiding how crimes are classified and how liability is defined.
   • Classification of Crimes
     • Definition: Felonies (serious crimes), misdemeanors (less serious), infractions/violations (minor offenses).
     • Relation: Tied to sentencing and corrections; links back to how statutes define different crimes.

2. Chapter 2 – Criminal Liability and the Essence of Crime

   • Actus Reus
     • Definition: The guilty act — a voluntary action, or failure to act when there is a legal duty.
     • Relation: Must combine with mens rea (mental state) → “Concurrence.”
   • Mens Rea
     • Definition: The guilty mind — intent, knowledge, recklessness, or negligence.
     • Relation: Works with actus reus; sometimes removed in strict liability.
     • Case: Commonwealth v. Levesque (2002)
       • https://law.justia.com/cases/massachusetts/supreme-court/volumes/436/436mass443.html
         • Summary: The defendants accidentally started a fire in a warehouse, failed to report it, and six firefighters died. The court held them criminally liable for manslaughter due to their omission.
           • Legal Concept: Actus Reus (omission) and Mens Rea (recklessness)
             • Analysis: The case shows how liability can stem not only from direct actions but from failing to act when there is a legal duty. The recklessness of not reporting the fire satisfied the mens rea requirement.
   • Strict Liability
     • Definition: Offenses where intent (mens rea) is not required (e.g., statutory rape, selling alcohol to minors).
     • Relation: Exception to the usual actus reus + mens rea rule.
   • Concurrence
     • Definition: Actus reus and mens rea must occur together for liability.
     • Relation: Connects all three — without concurrence, there is no crime.