Out of the blue people received postcards requesting that they appear for questioning. These were uniquely terrifying. Despite their prosaic form, such summonses could not be discarded or ignored. They put citizens in the position of having to turn themselves in at that most terrifying of buildings to respond to charges of offenses about which they likely had no inkling, with the potential—often imagined but in many cases quite real—that by day’s end they would find themselves in a concentration camp, under “protective custody.”
