This document provides an overview of criminal justice in the United States. It discusses the history of crime and the criminal justice system from the 1850s to present day. Key events include the civil war, prohibition, the civil rights movement, the war on drugs, and increased terrorism investigations after 9/11. The criminal justice system aims to balance individual rights with public safety. It outlines the components of the system including law enforcement, courts, and corrections. The stages of processing a criminal case from investigation to sentencing and reentry are also summarized.