How did Anti-Hitler groups/citizens describe their experience, once hitler took power, ? What do we know about the red flags, the precautions they took (or wish they took)?

How did the the Anti-Hitler population of Germany, Jewish or otherwise, describe the feeling of German leading up to the war. I know the normal geo-political things like WW1 and and the various forms of racism, which have been said to be important factors that lead to the war; but like.. how were people who didn’t like Hitler describing what Germany was like once he took power? Sorry it’s an awkward question that I know I could have worded better lol hope yall can decipher my meaning.. Thank you! 🙏