In the Garden of Beasts: Love, Terror, and an American Family in Hitler's Berlin

by Erik Larson

In this appraisal he came closest to grasping the true message of the Röhm purge, which continued to elude the world. The killings demonstrated in what should have been unignorable terms how far Hitler was willing to go to preserve power, yet outsiders chose to misinterpret the violence as merely an internal settling of scores—“a type of gangland bloodbath redolent of Al Capone’s St. Valentine’s Day massacre,” as historian Ian Kershaw put it. “They still thought that in the business of diplomacy they could deal with Hitler as a responsible statesman. The next years would provide a bitter lesson that the Hitler conducting foreign affairs was the same one who had behaved with such savage and cynical brutality at home on 30 June 1934.” Rudolf Diels, in his memoir, acknowledged that at first he also missed the point. “I … had no idea that this hour of lightning was announcing a thunderstorm, the violence of which would tear down the rotten dams of the European systems and would put the entire world into flames—because this was indeed the meaning of June 30, 1934.”