This document defines the key elements of crime under Canadian law. It outlines that a crime is any prohibited act or omission punishable by statute. There are typically four conditions for an act to be considered a crime: it is wrong by societal standards, causes harm, the harm is serious, and is handled by the criminal justice system. It also discusses the distinction between federal and provincial criminal laws. To convict someone, the Crown must prove the guilty act (actus reas) and guilty mind (mens rea) existed at the time of the offense. Mens rea can include intent, knowledge, criminal negligence, recklessness, or willful blindness. Strict and absolute liability offenses do not require proving mens rea.