"Against Authority" is a user-friendly term used to categorize a group of serious crimes defined in the Criminal Code as Offences against Public Order. These crimes threaten public safety, security, and stability and challenge the government's authority. This category includes acts such as airport or aircraft endangerment, hijacking, possession of illegal weapons or explosives, sabotage, sedition, and unauthorized control of a ship or fixed platform. Consequences of these crimes can be severe, including life imprisonment and hefty fines, and they may be tried as either indictable or summary convictions. This section will provide a comprehensive overview of these offences, their potential penalties, and the necessary elements that must be proven for a successful conviction.