Lobby group Hobson's Pledge is inciting violence, racism, hate and segregation within New Zealand, says one of the country's top Māori organisations.
The Māori Council has asked the Human Rights Commission to investigate the group, spearheaded by former politician Don Brash.
Meanwhile, Hobson's Pledge has welcomed an investigation so long as the commission applies the law in all aspects.
Māori Council executive director Matthew Tukaki said Hobson's Pledge wants to divide the nation.
"Let's be really clear here. This group has been able to get away with anything they please when it comes to race relations in this country and to be blunt; we are sick of it," he said.