Holocaust Museum

Matthew and I went to the Holocaust Museum at the Smithsonian, mainly because we'd been to the other museums before. We ended up spending quite a bit of time there on the tour. I most enjoyed the stories of the heroic individuals who risked their lives to save others, such as the White Rose group. However, the thing that struck me the most, and that I still have trouble grasping, is how most of the people of Germany, as well as Austria and some other countries, just went along with Hitler's plans. I may be off on this, but it seems like when Hitler said "OK, new plan, we're going to systematically discriminate against Jews", about 99% of Germans (and later Austrians and other countries) said "Sure, sounds good to me." How is that possible? And it's one thing to go along with discrimination, but then later, Hitler literally said things like, "We're going to go into Poland and kill every man, woman and child without mercy." And everyone was STILL ok going along with his plans. I know there was a lot of brainwashing and propaganda going on, and of course there was a point when it was too late to openly oppose anything, but I just can't comprehend how the large majority of normal citizens and/or soldiers were seemingly ok with Hitler's systematic discrimination, hate, murder, and genocide.