Mike Joseph's German Jewish parents escaped Europe on the day war broke out in 1939.
The journalist turned genocide historian spent time tracing his relatives but was only able to identify the SS leader who coordinated their killings.
He tells Martin about the fine line between correcting historic injustice while not perpetuating contemporary injustice, as his family battled to reclaim their house in Leipzig.
He also talks about defining anti-semitism and the romantic notion of Israel versus the reality.
You find Mike's website here and his work for Planet Magazine here For information regarding your data privacy, visit acast.com/privacy