Survivors of the Nazi's notorious Auschwitz death camp are taking center stage at the memorial service to mark 80 years since its liberation by Soviet troops.

It doesn’t do any good for your heart, for your mind, for anything,” said Holocaust survivor Jona Laks, 94, about her return to Nazi Germany’s Auschwitz-Birkenau concentration camp.

"I share this story, like many others who do, because we cannot forget all those innocent men, women and children who were slaughtered just because they were Jewish," said Friedman, who also noted that the Nazis targeted others,

In all, the Nazi regime murdered 6 million Jews from all over Europe, annihilating two-thirds of Europe’s Jews and one-third of all Jews worldwide. In 2005, the United Nations designated Jan. 27 as International Holocaust Remembrance Day.

Auschwitz survivors returned to the death camp in Poland to mark 80 years after the liberation. NBC News' Jesse Kirsch visited the location with some of the survivors as they shared their past experiences and what they want the world to know on Holocaust Remembrance Day.

Survivors of Auschwitz marked 80 years since the liberation of the death camp. They warned of rising antisemitism in a ceremony Monday at the site where Nazis murdered more than a million people, mostly Jews.