Okay, so this was a big suprise for me, I never thought it would get officially approved, given that it represents Maori sovereignty, something the government refuses to accept.
I disagree with it being flown officially whilst the government continues this stance.
As for it representing protest etc... it is often flown as a reminder of broken agreements of which these grievances have occured.
I don't think it should be flown, I don't see what's wrong with our current flag either. I'm happy to have the Union Jack, we are part of the Commonwealth (not that the UJ is necessary) and the southern cross is ours. If we were to change it, I would want something like a silver fern on black, something generically NZ and already recognized internationally.