

few outside of Germany knew that concentration camps existed
The creation of concentration camps was widely advertised in Nazi propaganda, as a show of force to intimidate dissidents. It was the later death camps that were secret: the ones that were designed for no purpose but to do murder at industrial scale.
Harry Chapin’s “What Made America Famous?” got an unsuccessful musical, but never a film. In a modern update, the song’s “hippies” are instead gutter punks squatting an abandoned building, and the fat plumber is the one non-MAGA in the town’s volunteer fire department.