I always heard this "nothing to hide, nothing to fear" attitude/saying attributed to goebbels and went to go find the source.

I fell down the research well and found it's actually from an author I've read but evidently not enough of his work: Upton Sinclair.

The source is The Profits of Religion and "Sinclair attacks institutionalized religion as a 'source of income to parasites, and the natural ally of every form of oppression and exploitation.'"

Seems sadly relevant to today.

Why do you want to scrutinize my personal life's details if I'm innocent?

Innocent until proven guilty should still be a thing.

"what're you hiding if you're innocent"

the nastiest furry porn collection you've ever seen

edit: (this is a lie tbh I'm into fairly tame kinks)