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Law Enforcement and Criminal Justice Study Notes


High-Speed Chases and Officer Safety

  • Definition of High-Speed Chase: The speed that constitutes a high-speed chase needs to be determined according to whether officer safety and civilian safety are in danger.

Conspiracy and Criminal Acts

  • Definition of Conspiracy: If two individuals agree to commit a crime and are apprehended later, this act falls under conspiracy laws.
  • Response to Criminal Acts: For example, if a suspect robs an officer's house, officers should not chase the suspect using lethal force.

Emergency Medical Procedures

  • Application of Tourniquets: When applying, write the time on the person's forehead or on the tourniquet label.

Police Work Specifications

  • Color Spectrum for Police Work: Police officers are typically associated with the color yellow due to its high visibility.
  • Speed Limits in Urban Areas: 35 MPH is the speed limit in urban areas. Specific limits include:
    • Residential: 35 MPH
    • Business: 25 MPH
    • School Zones: 15 MPH

Legal Charges and Assault Definitions

  • Charges Against Individuals in Altercations:
    • Punching a police officer can lead to Aggravated Assault charges.
    • A fight between two individuals may be defined as Simple Assault.
    • A failed stabbing attempt may result in Aggravated Assault/Criminal Attempt charges.

Handling Domestic Situations

  • Youth Involved in Domestic Disputes: If a juvenile strikes a teacher, a juvenile petition must be filed. When responding to a domestic dispute, officers should not interview the child in the presence of the parents.

Crime Scene Management

  • Clandestine Labs: If a clandestine lab is discovered, it is critical to contact OSHA or the DEA.
  • Safety During Traffic Stops: A patrol vehicle should be positioned 3 feet offset to the left during traffic stops and the officer should approach with caution.

Constitutional Amendments Overview

  • 1st Amendment: Freedom of Religion, Speech, and Press.
  • 4th Amendment: Protection against unreasonable searches and seizures.
  • 5th Amendment: Right to remain silent, protection against double jeopardy, and the right to due process (derived from Miranda v. Arizona).
  • 6th Amendment: Guarantees the right to a speedy trial, right to counsel, and the confrontation of witnesses.
  • 8th Amendment: Prohibits cruel and unusual punishment, stipulates guidelines on bail.
  • 14th Amendment: Establishes equal rights and the right to life, liberty, and property.

Case Laws

  • Mapp v. Ohio: Established the exclusionary rule, determining that evidence obtained illegally cannot be used against a person in court.
  • Maglioccio v. Commonwealth: Cannot be convicted of ethnic intimidation without a predicate offense.
  • Graham v. Connor: Use of force must be judged from the perspective of an objectively reasonable officer given the same circumstances.
  • Nix v. Williams: Addresses the inevitable discovery exception to the exclusionary rule.
  • U.S. v. Leon: Determines the good faith exception to the exclusionary rule.

Community and Police Relations

  • Building Trust: Effective community policing requires trust between the police and the community. Proactive measures in crime prevention are also essential.

Evidence Collection and Testimony

  • Direct Testimony: Initial witness testimony that is directly related to the crime.
  • Types of Evidence: Physical evidence is valued for its reliability as it does not require testimony to validate its existence.
  • Exclusionary Rule: Evidence obtained illegally is inadmissible in court settings.

Legal Procedures and Actions

  • Evidence Handling: When evidence is identified, it must always be documented and photographed before it is touched.
  • Search Warrants: These should be obtained in all instances unless there are exigent circumstances justifying a warrant exception. Time constraints for execution and conducting investigations also apply.

Regulations on Drugs and Controlled Substances

  • Schedule I Drugs: Defined as drugs with no acceptable medical use and the highest potential for abuse.
  • Levels of Proof: Understanding the differences between amounts needed for charging and felony versus misdemeanor specifications (e.g., 30 grams of marijuana for personal use).

Use of Force and Arrest Principles

  • Principles for Use of Force: The 4th, 8th, and 14th Amendments govern the lawful application of force in law enforcement.
  • Probable Cause: This is the threshold needed for making arrests and conducting searches without warrants.
  • Terry Stops: These require reasonable suspicion that the person is armed and dangerous, allowing for limited searches (pat-downs).

Ethical Standards and Accountability

  • Report Writing Standards: Officers should ensure that their reports reflect accurate and truthful accounts of their observations. Opinions should be avoided to maintain objective reporting standards.

Summary of Key Concepts

  • Definitions of Criminality: Crimes must have an actor's mental state (mens rea) in addition to the act itself (actus reus).
  • Approach to Conflicts: Officers are advised to manage conflict by separating parties involved and limiting space when dealing with domestic situations.