The Mana Party says people were left bruised and battered by police during a protest against the removal of state houses in the Auckland suburb of Glen Innes.
Housing New Zealand is asking some tenants to move house as it redevelops more than 150 properties to create at least 260 new homes.
The Mana Party says six people were arrested from Silverton Road and one woman had to be taken to hospital after having what it says was a seizure resulting from police brutality.
A truck that was sent to remove a state house was delayed for about three hours after four protesters lay beneath it.
One protester was dragged from under the truck and three more climbed out willingly after being warned they would be removed forcibly.
Mana Party vice-president John Minto was among those arrested and he says the community is resisting the project and escalating confrontations are inevitable.
He says Housing Minister Phil Heatley needs to halt the project for a month to allow time for talks with community representatives to avert the ongoing confrontations with developers and the police.
The police could not immediately be reached for comment.
