When the phone rang that night, it was St Vincent’s Hospital telling Ralph and Kathy that they needed to get to the hospital as quickly as possible.

"I think I knew the moment I saw him that he was already gone," Kathy tells Mia Freedman on the latest episode of No Filter.

If you and I commit to the core values that sit at the heart of Take Kare and Stay Kind - to challenge our drinking culture, to disavow any form of violence, to look out for each other, to listen, and to live with genuine compassion, then Kathy and Ralph Kelly did not lose their sons in vain.

Thomas and Stuart's legacy as two good, kind, empathetic people will live on - and the experiences of the Kelly's is one that Australia will never, ever forget.

TO HEAR THE FULL INTERVIEW BETWEEN MIA FREEDMAN AND KATHY KELLY / CLICK