Families and survivors had their first chance to confront the white supremacist who slaughtered 51 worshippers in a mass shooting at two New Zealand mosques as his four-day sentencing hearing began Monday.

“You killed your own humanity, and I don’t think the world will forgive you for your horrible crime,” said a tearful Maysoon Salama, the mother of 33-year-old Atta Elayyan, who was killed in March 2019 attacks. “You thought you can break us. You failed miserably.”

The gunman, 29-year-old Australian Brenton Harrison Tarrant, pleaded guilty in March to 51 counts of murder, 40 counts of attempted murder and one count of terrorism — the first terrorism conviction in New Zealand’s history. He could become the first person in New Zealand to be sentenced to life imprisonment without the possibility of parole, the toughest sentence available.

Tarrant was brought into the Christchurch High Court shackled and wearing a gray prison outfit. In the dock, unshackled and surrounded by five officers, he showed little emotion throughout the hearing. He occasionally looked around the room, tapped his fingers, and watched the survivors as they spoke.

The courtroom was only half full due to coronavirus distancing requirements, while many others watched from adjacent courtrooms where the hearing was streamed. Survivors and family members occasionally wept and comforted each other.

Two dozen victims and family members told the court about the pain of losing husbands, wives, sons and brothers. Some had family members around them for support, others spoke through translators or on pre-recorded videos from abroad.