The woman who threw a dildo at Economic Development Minister Steven Joyce says she did what she did to "gain awareness about the atrocity that is the TPP".
Josie Butler, a nurse, launched the sex toy at Mr Joyce while he was talking to media following a meeting of iwi leaders at Waitangi on Friday.
An anti-TPP activist, Ms Butler yelled: "that's for raping our sovereignty".
She told Mana News she's concerned about what the Trans-Pacific Partnership trade deal will mean for her patients and for New Zealand.
"I believe, and I am not alone, that the TPP will have profoundly negative effects on New Zealand, socially, culturally and economically," she said.
"Balanced debate on the issue has been continually shut down by the government. I think it is a shame that it takes a hard-working nurse throwing a dildo at a politician to open up this debate."
Ms Butler said after the incident, police dealt with her "professionally". No charges were laid.
But Prime Minister John Key hasn't been impressed by the incident.
"We would be more than happy to sit down and discuss the TPP with people," he told the Paul Henry programme.
"What she did actually is she created an image that went everywhere, went totally global.
"No one internationally is going to look at that and say 'it's TPP'; they're going to say it's some woman throwing a dildo at a minister."
Labour leader Andrew Little said throwing things at politicians shouldn't be encouraged.
"What if it wasn't what it was, what if it was something much harder?" he told reporters.
"I know people go to Waitangi expecting a right old ding dong, but I don't think necessarily like that."
Mr Little said people should protest and take their issues up, but there's a right way to do it.
"I'm not sure if this was the best way to do it," he said.