Before revision: The Act was brought into force three times in Canadian history: during Canada's first national internment operations of 19141920, the Second World War's Japanese Canadian internment , and in the 1970 October Crisis.
After revision: The Act was brought into force three times in Canadian history: during Canada's first national internment operations of 19141920, the Second World War's internment of Japanese Canadians , and in the 1970 October Crisis.