TWO decades after his wife and two daughters were gunned down at Port Arthur, Walter Mikac says Australia risks becoming complacent and undoing two decades of good work.
The Mikac family had moved to the Tasmanian village of Nubeena in 1994 for a quiet life, but tragedy struck two years later. 
Mr Mikac's wife, Nanette, had taken the girls for a picnic at Port Arthur, when they were killed along with 32 others.
He said there were a number of key points after the event which helped with the healing process, including the passing of new gun laws by the Howard government.
Also instrumental was Mr Mikac writing a book about the experience, and founding the Alannah and Madeline Foundation in 1997.
He said it was a way to honour his daughters, by helping to care for children who have experienced or witnessed serious violence.
"Children have got no hope whatsoever when it comes to gun violence," Mr Mikac said.
"People become comfortable because of the fact we haven't had a school shooting, like what's happening in the US on a weekly basis. That's fantastic but at some point, we need to be snapped into realisation that if we are lax in our gun laws, there is a risk of it possibly happening." Mr Mikac said the 20th anniversary of Port Arthur should be a day to remind the younger generations of the dangers of relaxing the laws. This was why his foundation was calling for the ban of the Adler shotgun for public use.
He said he was disturbed by calls from a number of politicians in Queensland and New South Wales and the pro-gun lobby calling for a relaxation in the laws.
"People shouldn't feel the need to have a gun to protect themselves against someone else who has a gun," he said.
WHAT ARE THE ADLER SHOTGUNS?
They use a lever action to load cartridges in the barrel Can shoot seven cartridges in as little as seven seconds.
Gun control advocates insist they are closer to a semi-automatic weapon than to a traditional shotgun Seven-cartridge version was banned for a year in   August last year following a review of gun laws in wake of Sydney's Lindt cafe siege Since the ban, about 4000 modified five-shot Adlers have been imported into NSW, Queensland and VictoriaTo sign the petition visit www.amf.org.au