How thin can you skate

From Stuff: Opposition to haka 'misinterpreted' gesture says NZRU

Really: "We need to promote understanding of haka. The concern about Kapa O Pango's final gesture makes that clear. While the haka's final movement had been described as a cut-throat gesture, its meaning within Maori culture and the tradition of haka is very different" he said.

Composer Derek Lardelli said that Kapa O Pango ends with the word "Ha" which translates as the breath of life. "The words and motions represent drawing vital energy into the heart and lungs. The right arm searches for the "Ha" on the left side of the body, Mr Lardelli said, while the head turns to the right also symbolically seeking vital energy. The right hand hauls that energy into the pou-whakaora (the heart, lungs and air passages), then the eyes and tongue signal that the energy has been harnessed before it is expelled with the final "Ha", Mr Lardelli said.

A slitting of the throat is a harnessing of energy, life as in giving not taking away, well spear tackle me !