"Step back and consider the cultural context. Germany is still scarred by the memories of two world wars, fascism, communism, deflation and hyperinflation: in general, huge instability. Since the end of World War II, however, personal savings and the banking system have been an oasis of predictability and a driver of growth. Many Germans treasure their frugality, perhaps excessively or irrationally, and it has become an important part of the narrative Germans tell themselves about the economic order they have built.
Now enter the ECB, in essence telling Germans (and others) that savings are a bad thing, to be taxed and penalized. The very word “negative,” as in “negative interest rate,” makes the policy hard to sell politically. The German word “Strafzinsen” refers to a penalty rate, but the root “Straf” also refers to punishment, and it was used effectively by Franz Kafka in his famous torture-laden short story “In the Penal Colony” (the German title is “In der Strafkolonie”). One German newspaper referred to the “final expropriation” of the German saver, noting that the ECB’s decision to deviate from its inflation target carries “grave consequences.”"