The German Nazi regime implemented a plan of persecution and extermination of Jews and others in which years?

They exterminated it like mosquitoes

As a Child I was given an accordion, a gift from a couple, victims of Auschwitz they could not have children. Its My most treasured po session, a sąd memory of the attroseties they endured.

this question is not clear. there are several views on when the Holocaust happend from different historians. (see German Wikipedia) if the question would have asked about the time of the Nazi regime, the answer would be correct.