They were a rabidly anti-Semitic party whose central principles were racial purity and complete submission to a single cult-like leader, a guy who wrote a book

They were a rabidly anti-Semitic party whose central principles were racial purity and complete submission to a single cult-like leader, a guy who wrote a book calling for Germany to conquer "living space" for ethnic Germans in Eastern Europe. This party had a paramilitary organization that beat up its political opponents in the streets. It wasn't difficult to see that the Nazis were horrible.