This week tens of thousands of people from all walks of life and all ages converged on Parliament in opposition against ACT's Treaty Principles Bill. The bill seeks to redefine principles that have been developed over decades. ACT leader David Seymour was unavailable for an interview so Mihi speaks to one of the country's leading legal experts on the Treaty. Sir Edward Taihakurei Durie helped establish the Waitangi Tribunal in 1975 and was its chairman, as well as being a former High Court Judge and Chief Judge of the Ma¯ori Land Court . He tells Mihi about how the genesis of the principles came from then Minister of Maori Affairs, Matiu Rata.