Back in the 1960's two teachers at Claremont HS in Claremont, CA did a prolonged class on the end result of the 1930's propaganda. The presented all the propaganda in favor of a fascist government without censoring it or immediately criticizing it. An overwhelming number of students came to support the Nazi agenda without knowing it was Nazism. The last day of the sessions on pre WWII Germany (I think it was after 10 to 14 days), the teachers showed where the policies which the students believed were so great lead -- the death camps. Parents complained that their children were upset.