Thank you, your comment made me aware of this event I didn't know. [1] I have found at least one concrete evidence you assertion is correct [2]: The Dusseldorf Agreement of March 16, 1939.
> The British historian Martin Gilbert believes that "many non-Jews resented the round-up", his opinion being supported by German witness Dr. Arthur Flehinger who recalls seeing "people crying while watching from behind their curtains". Rolf Dessauer recalls how a neighbor came forward and restored a portrait of Paul Ehrlich that had been "slashed to ribbons" by the Sturmabteilung. "He wanted it to be known that not all Germans supported Kristallnacht."
This passage is particulary eerie IMHO, since I've been reading "I don't condone this" of current world events over and over.
> In 1938, just after Kristallnacht, the psychologist Michael Müller-Claudius interviewed 41 randomly selected Nazi Party members on their attitudes towards racial persecution. Of the interviewed party members, 63% expressed extreme indignation against it, 5% expressed approval, and the remaining 32% were noncommittal.
Also particurlarly eerie to me. Yet the regime went on.