Uhhh... the word you want is kapu, not kupu or kupo. Kapu means both "sacred" and "forbidden". It was also a system of laws in ancient Hawaii. Many native Hawaiians believe that their land is very sacred and that some parts should be forbidden to build upon or otherwide desecrated.
Most groups who protect the land are legal and do things in the open, and altho there really are gangs in Hawaii, I don't think a whole lot of them are focused on protecting the land (but since I'm mostly haole (technically hapa) and no longer live there, I could be wrong.
Loved "Hawaii 78" played at the end, that was a beautiful scene! And the scenery in general just POPS! Makes me want to move back to my island home...
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