Musician Jason Kerrison - one of the famous Kiwi faces throwing their support behind the Wellington protesters - has been shut down by Hilary Barry, after he sent her an offensive tweet, calling her "smug".
The social media exchange started after Barry wrote on Twitter: "Retweet if you're NOT going to the anti-vax protest in Wellington. Oops I mean anti-mandate."
Almost 3000 people retweeted the message but Kerrison, who found fame as lead singer of the band Opshop and for hits such as One Day, replied: "So smug too. Yuck, especially when you're so influential. Scripted or muzzled? Let's not repeat history Aunty. The truth is agnostic and relentless."
In the tweet, he also included a black and white image of what is supposedly a mass hanging in Nuremberg, Germany - but is, in actual fact, one of Nazi war criminals being executed in Kyiv, Ukraine - with the words "since we're now into repeating history, let's not leave anything out".
He has since deleted the tweet.