In your opinion, how did the Nazi party come to national prominence in Germany, and why did the general German population allow the atrocities to occur and continue?

This is an admittedly agenda based question, designed to explore how poor human behavior exists with the tactic permission of the best of human behavior.

Err on the side of caution and give them the benefit of the doubt only work if both parties have decent intent. If a good person errs on the side of caution and gives an evil person the benefit of the doubt, they are enabling evil, and in a way, committing evil.

Sins of commission and omission apply.