Police estimated around 10,000 people attended in the wet weather.
After the House of Representatives was suspended, Seymour told media the haka was "disruptive'.
With the Hīkoi mō te Tiriti only halfway to Parliament, ACT Leader David Seymour’s controversial Treaty Principles Bill is going through its first reading.
The hīkoi for the Treaty enters day four, with the march heading for Rotorua.
The Toitū te Tiriti Hīkoi saw an estimated 5000 people join in Tāmaki Makurau, with many people from different ethnicities and cultures supporting the movement.
Flags soared during Wednesday’s Hīkoi across the Harbour Bridge, not just the Tino Rangatiratanga, but Pacific flags flying proudly alongside them.
“I feel like so many times we look at our tīpuna and go 'oh my gosh I wish that I could be change-makers like them' - and it’s happening right now."
“If they can not acknowledge takatāpui in their apology, it’s a good indicator that this is going to continue."
He also acknowledged and apologised on behalf of all successive Labour-led governments for playing a role in the neglect, abuse, trauma and torture.
In his address to the survivors, he said his apology represented his government and all the governments before him.
