Migration to New Zealand began only very recently in human history - with Polynesian settlement in New Zealand, then uninhabited, about 1250 CE to 1280 CE. European migration provided a major influx, especially following the signing of the Treaty of Waitangi in 1840. Subsequent immigrants have come chiefly from the British Isles, but also from continental Europe, the Pacific, the Americas and Asia.

The dawn raids were crackdowns in New Zealand from 1973 to 1979 and then sporadically afterward on alleged illegal overstayers from the Pacific Islands. The raids were first introduced in 1973 by Prime Minister Norman Kirk's Labour government, who discontinued them in April 1974. However, they were later reintroduced and intensified by Rob Muldoon's Third National government. These operations involved special police squads conducting often aggressive raids on the homes and workplaces of overstayers throughout New Zealand, usually at dawn and almost exclusively directed at Pasifika New Zealanders, regardless of their citizenship status. Overstayers and their families were often prosecuted and then deported back to their countries.