The German group, Zupfgeigenhansel, recorded a beautiful album of Yiddish songs some years ago. A couple of those songs came from the ghettoes. Keeping those songs alive is one way of making sure that the Nazis never succeed in their aim of obliterating a culture.
I should start another thread about this below the line, but it is only a week since the fascists in one of the East German regional parliaments refused to join in a minute's silence for the victims of Auschwitz. They were protesting that the memorial should be to Germans killed by the Allies in bombing raids, particularly the Dresden massacre.
These fascists are still abhorrent to most Germans, but it is a worrying sign that they can put their heads above the ground and that even in a liberal city like Cologne, they achieved over 11% of the vote in the last local elections.