The Westminster Parliamentary system showed iself to be eminently fallible under the Apartheid system. Established customary laws can be wiped out by the next legislative act, as long as they have a majority (and iit all depends on how you define majority, and who has a right to vote).
I much prefer the current SA law system, with a Bill o f Human Rights at its head as the highest law, and against which all other laws are subject to, and which guides interpretation of all other laws. And which requires a huge majority to change. That way some asshole politician cannot take away rights on a whim, or by some legal sleight of hand. All new acts can be challenged against the bill of rights by anybody, at the Constitutional Court - the ultimate court.
NZ has a Bill of Rights, but it is not teh highest law in the land, no other laws are subject to it, and it has as much force as any other act which may conflict it.
Its probably high time that NZ got a legal system extreme makeover.
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