Protesters gather at Sky City convention centre where the TPPA is being signed.

Trade ministers from the 12 countries involved in the Trans-Pacific Partnership agreement (TPPA) today signed the biggest trade deal in history, here in Auckland. Never before has a free-trade deal provoked so much interest - or so much outrage.

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SAM BOYER A TPPA protest is brought to a standstill by traffic...caused by other TPPA protests in Auckland

LAWRENCE SMITH Protesters gather outside Auckland's SkyCity demonstrating the signing of the TPP trade agreement.

A protester next to police outside SkyCity, Auckland.

JOSH FAGAN Protesters at SkyCity in Auckland on Thursday morning