War Measures Act
The War Measures Act was a federal law adopted by Parliament on 22 August 1914, after the outbreak of the First World War. It gave broad powers to the Canadian government to maintain security and order during war or insurrection. It was used, controversially, to suspend the civil liberties of people in Canada who were considered “enemy aliens” during both world wars, leading to mass arrest and detention without charge or trial. The Act was also invoked during the 1970 October Crisis in Quebec. It has since been replaced by the more limited Emergencies Act.