Politicians criticising a Government Minister for attending a Mongrel Mob event are being told to come and visit for themselves. 

The Green Party co-leader Marama Davidson and Human Rights Commissioner Paul Hunt attended a gathering at the Hamilton gang HQ on Saturday.

They discussed human rights, justice and racism in front of a room of patched members.

It's sparked criticism from National and ACT Party MPs, but Waikato Mongrel Mob Kingdom adviser Louise Hutchinson says the media attention is unfair.

She told Kerre McIvor critics don't know what was said at the event.

"We are an organisation that's working bloody hard in the community to turn around the wrongs of the past." 

Hutchinson denied that the gang is still dealing meth or engaged in criminal activity, asking McIvor: "Why do you keep referring back to criminal activity?" 

She says that other Ministers have come to visit, but do it "under the radar" due to concern about criticism. 

LISTEN ABOVE

• 'An insult': Marama Davidson criticised for attending Mongrel Mob event