My best friend was killed by her ex-husband — this is the message I want men to hear

Hannah Clarke and her three children were killed in an horrific attack that shocked Australia but for Dave Kramer their deaths were personal, he knew her ex-husband and had witnessed their relationship up close.But Dave's own childhood exposure to domestic violence had blinded him to some of the signs that Hannah and her kids were in danger.

After Hannah's death, Dave began the difficult work of confronting his past and educating himself on how to recognise abuse and have the confidence to speak out and help.

He now helps educate teenagers and young men...