Does the hakka mean the same as it does in western cultures as a peaceful perfomative protest or does that mean something like a threat/declaration of war in Maori culture? I'd apply the former, but last time I did that I was accused of being orientalist :/
It can be both. Traditionally is was a 'war dance', but depending on the lyrics and context it can be used as welcoming, a farewell, or many such things. You would have to translate it to know.