There's belief from some that the All Blacks' support for Hīkoi mō te Tiriti is a call for unity.

As halfback TJ Perenara led the pre-test haka yesterday - he referenced the movement opposing the Treaty Principles Bill.

Former Black Fern and Labour MP Louisa Wall says the tradition has evolved over time.

She says it's a team decision who leads - and Perenara wouldn't have been acting alone.

"He obviously talked to his teammates and coach about what the purpose and intent was behind the haka, so that's their choice, surely."

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