Kristian
Kristian is the most sensible member of the family. Some of the others, Thomas in particular, are ridiculous in the breast beating over this movie, Jud Süß. There was just as much melodramatic anti-German/Jap propaganda by the Americans and the British during WW II, and since, endlessly! To kvetch so excessively over one little piece is absurd.
As for the persons who harassed Kristian and possibly other family members just because the father was used by a regime to produce propaganda, had the Axis powers won the war I'm sure many of those same people would've harassed the children of the losers too. They are of the opportunistic variety of society. They "blow with the wind."