Nativism is the political policy of promoting or protecting the interests of "native-born" or established inhabitants over those of immigrants, including the support of anti-immigration and immigration-restriction measures. Despite the name, and in the US in particular, this position is usually held by the descendants of immigrants themselves, and is not a movement led by Indigenous peoples, as opposited to Nativists in Europe who are descended from native peoples such as Celts, Anglo-Saxons or Norsemen.

From 1942 to 1949, Canada forcibly relocated and incarcerated over 22,000 Japanese Canadians—comprising over 90% of the total Japanese Canadian population—from British Columbia in the name of "national security". The majority were Canadian citizens by birth and were targeted based on their ancestry. This decision followed the events of the Japanese Empire's war in the Pacific against the Western Allies, such as the invasion of Hong Kong, the attack on Pearl Harbor in Hawaii, and the Fall of Singapore which led to the Canadian declaration of war on Japan during World War II. Similar to the actions taken against Japanese Americans in neighbouring United States, this forced relocation subjected many Japanese Canadians to government-enforced curfews and interrogations, job and property losses, and forced repatriation to Japan.