There is no excuse for preferrign either. Neither’s crimes had been made public in the 1930’s.
Pastor Bonhoeffer already had Hitler pegged by January of 1933... technically even earlier in 1932 when the Nazis were trying to manipulate church elections in order to take over.
... And he also witnessed the rot of the American left by 1931 when he visited the hollow farce known as the Riverside Church.