A recent protest in New Zealand's Parliament in which lawmakers broke into a Haka—a traditional Maori dance—has attracted global attention. One might wonder, what egregious measure under protest warranted such a dramatic show of opposition?

The Treaty Principles Bill seeks to revise New Zealand’s foundational agreement with Maori people and is hugely unpopular, with even the prime minister deriding it.

Rawhiti Maipi-Clarke of Te Pāti Māori stood and began a rhythmic Māori chant of challenge, which swelled to a roar as opposition lawmakers and spectators in the public gallery joined in.