On the Wikipedia page for "Nightmare Alley" (1947) it says
....the film was not a financial success upon its original release, due in part to protests against some of the scandalous content
I did not think the content seemed too scandalous. What are they talking about? What, specifically, were these "protests"? Protests about what? The guy drinks and kisses the lead actress a few times. What is so scandalous about that?