New Zealand’s Parliament was temporarily suspended on Thursday as Māori lawmakers performed a haka, a traditional group dance, demonstrating their community’s anger and fear over a bill that aims to reinterpret the country’s founding treaty with its Indigenous people.

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.

New Zealand’s parliament was briefly suspended on Thursday after Maori members staged a haka to disrupt the vote on a contentious bill that would reinterpret a 184-year-old treaty between the British and Indigenous Maori.