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What is so offensive to you about cultures which differ from your own?
I doubt many claims to the Waitangi commission are that obscure, it's pretty well documented that offenses happened after the treaty was signed.
This, however, will not be about a claim, they're simply embracing local culture that is uniquely from NZ.
I hope that the Phoenix do more Maori, to be honest we make a piss poor attempt at bilingualism. Fewer people speak Scots and Gaelic than Maori yet those languages are dual language on street signs and in menus in the regions where they're spoken, the same with the regional languages in the former Soviet Union.