An Irish Holocaust survivor has warned the atrocity could ‘easily’ happen again, as a survey finds 9% of young people believe it was a myth.

19 per cent of Irish 18- to 29-year-olds believe the Holocaust happened, but its scale has been “greatly exaggerated”, according to the survey.

Taoiseach Micheál Martin will join world leaders for the event.

Michael D Higgins emphasised the importance of education to build a peaceful future

John Boyne’s work explores a friendship between the son of an SS officer and a prisoner boy at Auschwitz.