Fielding believed that the "dialectic of insiders and outsiders" was the "linchpin of its ideology", and noted that the NF's "rigid boundaries between in-group and out-group" was typical of the far-right. In its 1974 electoral manifesto, the NF called for a "vigorous birth-rate" among the white British, claiming that any ensuing overpopulation of the UK could be resolved by emigration to the British Commonwealth. Tyndall defended Nazi Germany's "lebensraum" policy, and under his leadership the NF promoted imperialist views about expanding British territory to serve as "living space" for the country's growing population. By 2011, the party's website was utilising the Fourteen Words slogan: "We must secure the existence of our people and a future for white children."