In November 2018, a 30-year-old terrorist armed with a knife went on a rampage in Bourke Street stabbing three people. Multiple first responders recount their experiences on that tragic day.

A father of three and his girlfriend died when their seaplane crashed into Perth's Swan River in front of 60,000 spectators. Families watched in horror as the plane nose-diving into the water.

Terrifying images of Australians turning on one another are burnt into our memories. First responders and eyewitnesses recall the events that led to Australia's day of shame.