There are obviously a lot of stupid things in this, mainly that the UN is a threat to American freedom. It might just be my opinion, but the closer we are to identifying all humans as one people, the better.
Also, a lot of things in this seem to support the idea that America is somehow better than other countries. That is obviously not true at all. We may be the most financially prosperous, but we've done more than our share of bad things (think occupation of the Philippines and Japanese internment camps). Crap like this just enforces the stereotype that Americans think they're better than everyone else. America is one country among many, and that's what the schools should teach.
Maybe in History classes, students should just be taught how to analyze historical facts? A complete overhaul of the way we teach History is what's needed, in my opinion.