The daughter of a Bondi Beach attack victim has described how, since the shooting, she has received messages saying she too should have been killed.

Sheina Gutnick was the first witness appearing before Australia's royal commission into antisemitism, set up in the wake of a shooting at a Hanukkah event in December in which 15 people were killed.

Gunman Sajid Akram, 50, was shot dead by police at the scene and his son Naveed Akram - the other alleged attacker - was critically injured and later transferred from hospital to prison.

The 24-year-old has been charged with 59 offences, including 15 counts of murder and one of committing a terrorist attack.

"I saw people trying to excuse and justify the events as only anti-Zionist," Gutnick told a public hearing in Sydney on Monday as she listed the ways in which she was made to feel unsafe in her own country.