Facial tattoos have been a part of Maori culture for centuries, a sacred marker of the wearer's genealogy and heritage. But one woman's striking chin design - or moko - has generated huge debate ...

Olivia Pierson had tweeted that facial tattoos on a female diplomat was "ugly and uncivilised". Nanaia Mahuta is the first female MP in New Zealand to have a Maori facial tattoo. She was appointed ...