He said polls showed most people wanted GST off food, while he thought people were of the feeling that the wealthiest New Zealanders did pay their fair share of tax.
Mr Brookes was hopeful a broader Tax Justice coalition could emerge, which he said was achievable given the breadth of organisations present today.
Mr Harawira said any move to bridge the wealth divide and reduce inequality was worthy of support.
"GST is a tax that targets the poor because they don't have much money to spend, and nearly everything that they spend gets hit by GST,'' he said.
"On the other hand, financial speculators deal in millions of dollars every day on the world's financial markets, and don't pay anything.''
Labour Party leader Phil Goff this morning said his party supported removing GST from fresh fruit and vegetables, but had not budgeted for changes beyond that.
"We have a fiscal situation that would limit the amount of work that we would be able to do in that area.''
- NZPA