Kelvin Davis is urging others to speak out against sexual violence because he knows how it feels to remain silent.
Today the Te Tai Tokerau MP will launch the "Massive" hikoi, which will see him and others walk the length of the electorate over 17 days.
Massive, standing for Men Against Sexual Violence, was not an organisation, Mr Davis said.
"Massive is simply a rallying cry for any man who opposes sexual violence, against anybody, in any shape or form, be it verbal, physical or emotional," he said.
The hikoi will start in West Auckland on May 29 and end at Cape Reinga on June 14.