Natalie Barr breaks down on live television

Every now and then, there's a moment in television that's raw, unscripted and almost shockingly authentic.

Our office stopped this morning as Sunrise newsreader Natalie Barr revealed one of the hostages killed in the Martin Place siege was Katrina Dawson.

The 38-year-old mother of three children was a lawyer and the younger sister of barrister Sandy Dawson, who has worked with Channel 7. Barr's grief as she struggled to maintain a professional face moved some to tears.

This is an awful morning for Australia, and it's the job of the media to report it as honestly and completely as it can. But as Natalie Barr so movingly illustrated, they don't always walk away unscathed.

Katrina Dawson - one of the victims of the Martin Place siege. Photo: Sunrise