There’s no need to prove that Spakovsky’s father was a Nazi to explain or hold Spakovsky accountable for his beliefs and actions. Any attempt to do so is a waste of time and a distraction. It also echoes the idea that children inherit the sins of their parents, which I believe is in line with authoritarian thought.
An interesting counter example:
Stephen Miller was born in California, is Jewish, specifically descended from Eastern Europeans who escaped pogroms, the grandchild of immigrants, and the child of democrats one of which was a social worker. Why is he acting so much like a fascist and a key member of an administration that apparently hates California, democracy, social programs, and is hell bent on starting its own anti-immigrant pogroms?
Judge a piece of shit for who they are, not because they come from a long line of pieces of shit.