It is a rarity among nations that were once colonised: a country that widely uses its indigenous language, where a treaty with its first peoples is mostly honoured and where indigenous people have permanent representation in the halls of power. But a decadeslong push to support Maori, New Zealand's indigenous people - who lag behind the wider population in health and wealth and have higher incarceration rates - is in peril. New Zealanders in October elected the country's most conservative government in a generation, one that wants "equal rights" for every citizen.