The ACT Party's railing against government plans to change laws around hate speech.
The work was prompted by the March 15th mosque attacks.
But David Seymour says a crackdown on hate speech will punish people for subjectively-held opinions.
He's touring the country to rally support for free speech.
Speaking with Chris Lynch, he announced his free speech tour is now coming to Christchurch.
'More and more people feel unable to express themselves, people are concerned about de-platforming or being set upon by the mob. This is dark ages stuff.
"We must defend out tradition of free speech, and this is what our tour is all about."