Rosie Batty has praised the findings of the Victorian inquest into the death of her son Luke, saying it highlights the failings in the system rather than apportioning blame.
Luke, 11, was killed by his father, Greg Anderson, 54, at Tyabb cricket ground south-east of Melbourne on February 12, 2014.
Anderson was shot by police at the scene and later died in hospital.
The coroner, Ian Gray, today made 29 recommendations into the systemic problems that contributed to Luke’s death.
Ms Batty said Luke’s father was never held accountable for his actions.
"We have to look at the issues around privacy, we have to look how to work in a more integrated [way]. We absolutely have to make perpetrators accountable," she said.
"Luke's findings helped me realise through the journey before the inquest that Greg was never made accountable, not once.
"This is unacceptable.
"And the biggest change we need to see is how we effectively intervene with perpetrators and work to stop the violence."
Ms Batty said despite the tragic circumstances of Luke's death she believed he had not died in vain.
"Justice Gray said to me today personally, 'Luke has not died in vain'. That's what I've been working for. Luke hasn't died in vain and if I look back over the years since Luke's ... since we were at the inquest in that building, there's some amazing things that have happened," she said.
She also praised the announcement by Prime Minister Malcolm Turnbull last week who pledged $100 million to tackle domestic violence in Australia.
"We have a Prime Minister who's actually understanding that this is a gender issue. And when he spoke and said 'that disrespect does not always end in violence, but violence always starts with disrespect', I felt for the first time that as a woman, we're starting to gain the support that we need to understand that this issue requires men to lead the change."