Believe me, German history education is very thorough in making sure people know that the Nazis weren't some kind of slippery slope situation where people didn't know what they were planning to do. The Nazis were open in their idea that Germany could have won WWI if it hadn't been for those damn lefties and their revolution. They were open about their desire to crush those lefties. They were open about their hatred for Jews. Hitler wrote Mein Kampf about his ideology in prison after his failed 1923 coup. When people voted for him in the 1932 election, they weren't somehow unaware of these. They voted for him because they knew and because they agreed.