score:4
A historian named David Bankier wrote a classic book in the 1960s called The Germans and the Final Solution: Public Opinion under Nazism. Bankier argues (as quoted in a student book review) that βunprecedented political apathy, coupled with the conservative and clerical oppositionist attitudesβ shaped strategic decisions in 1936 and 1937. This doesn't support the kind of "turning point" the questions asks for, but it does suggest that negative public opinion had relevance to the Nazi regime.