94-year-old Oskar Groening, the so-called 'Bookkeeper of Auschwitz', has been found guilty of being an accessory to the murder of 300,000 people.
A German court has sentenced him to four years in prison.
Eva Mozes Kor, an Auschwitz survivor who has forgiven the Nazis, has said she is "disappointed" that Oskar Groening has been sentenced to imprisonment.
She said: "He has accepted responsibility and admitted his guilt. They are trying to teach a lesson that if you commit such a crime, you will be punished. But I do not think the court has acted properly in sentencing him to four years in jail. It is too late for that kind of sentence."
She went on: "My preference would have been to sentence him to community service by speaking out against neo-Nazis. I would like the court to prove to me, a survivor, how four years in jail will benefit anybody. Groening said in his statements that he was wrong, it never should have happened, and it should never happen again.
"The reason I am speaking out is because so many survivors are still suffering emotionally, 70 years later, and they do not understand they have the power and the right to forgive."
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.