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 Te Pāti Māori MPs began a haka during a vote for the legislation that would reinterpret a 184-year-old treaty between the British and the Indigenous people of New Zealand that some say is discriminatory.