Meitner, though raised a proper Austrian Protestant, had Jewish grandparents.

Stuckart, when asked about persons with one Jewish grandparent, 'proposed to proceed with compulsory sterilisation'.

In fact, even subjects with a single Jewish grandparent can be statistically distinguished from those without Jewish ancestry.

Things unfold slowly in the suburban home of Amstell's Jewish grandparents, whom he visits weekly alongside his mother, aunt and younger cousin.