One terrorism expert, believes alt-right radical thinking is growing.
Auckland University professor Chris Wilson says there's a line between mainstream alt-right thinking, and those who go out and commit violence.
But they're all part of the same network. Wilson told Mike Hosking it's worrying.
"I think it's large and it's growing. It is very, very large online where a lot of people are radicalising and until now I guess we didn't really belie that there was too much of a problem in New Zealand."