It comes down to values vs. the ability to reason. I think most liberalism is due to absorbing shallow fact and trying to simplify complex events. My wife thinks it is more about VALUES. That liberals and conservative value different things.
My mistake was thinking the propaganda would start in senior high school. Seems strange that we are talking to kids in Grade 6 about Castros cuba, US elections, and the effort to clear Mosul of terrorists. So what I am up against is these very very complex issues. It would take pages and pages of information and explanation to explain these, but they are reduced to 2 pages in this textbook.