Nazi criteria for establishing Judaism and in particular the criminal criteria for those who were half Jewish: “It is crucial to note that a person was considered Jewish and was shot if he was related to a Jew up to three generations inclusive, in cases where the husband and wife were of different nationalities. I know of the following example: A Jewish woman who was married to a Ukrainian, their daughter who was also married to a Ukrainian, who herself had a daughter married to a Ukrainian … were all shot as Jews. A man or woman married to a Jew who was of another nationality was not shot.”
