The Taoiseach has said that we should educate ourselves about the Holocaust so we can prevent such horrors happening again.
Speaking at a ceremony to mark Holocaust Memorial Day at the Mansion House in Dublin, Leo Varadkar said it was important to understand how the Jewish people became victims so we can intervene when other groups are being victimised due to racism or discrimination.
A small number of Holocaust survivors are still living in Ireland.
One of those, Suzi Diamond, said it was her duty to speak out about her experience.
"I must have been saved for some purpose," she told RTÉ News.
The ceremony was organised by the Holocaust Education Trust Ireland, and included readings, survivors' recollections and music.
Six candles were lit to symbolise the six million Jewish people who were killed in the Holocaust.
More than 100 school children from across Ireland took part in the ceremony.
Some of them read from the Scroll of Names - an Irish memorial to family members of people living in Ireland who died in the Holocaust.
.@campaignforleo meeting some of the Holocaust survivors at the Mansion House. The Taoiseach said we should educate ourselves about the Holocaust so we can prevent such horrors happening again #holocaustmemorialday pic.twitter.com/LSDIZG1njz— Gill Stedman (@GillStedman) January 28, 2018
HETI chairperson Eibhlin Byrne has said Holocaust Memorial Day is an opportunity to focus on remembering and never forgetting, but also ensuring that we will not be the generation who do not care enough.
The ceremony has been held in Dublin every year on the last Sunday in January, close to the date of the liberation of Auschwitz-Birkenau.