Protesters egged Prime Minister John Key's ministerial BMW as it collected him from a state housing development in Napier this afternoon.
Mr Key was unhurt in the incident but one man was later arrested for obstruction.
The incident happened about midday in Maraenui as Mr Key concluded a visit to a new state housing development.
Earlier, about 10 protesters, some clutching Mana Party banners, greeted the prime minister and challenged him about child poverty and enabling synthetic cannabis to be sold.
They shouted: "One, two, three, four, stop the war on the poor,'' and "Maraenui under attack, stand up, fight back''.