Prize Gotti, you're being so vague here that I'm not sure what you are saying is all US government propaganda. That Americans fought and lost their lives fighting in Europe? No? Well that alone is helping England win the war. Nothing is all propaganda. Anyone who's read A People's History of the United States by Howard Zinn, or similar books, will get the idea that there's another side to the usual public school textbooks on US history. And some of it is undoubtedly true. This stuff is not hidden or hard to find. In fact, it's all over the place. Very few Americans are clueless nowadays, and don't believe everything the government puts out. But just like the "official" story, a lot of this needs to be balanced and it's not. The writers have an ideological agenda: communist, socialist, anti-elites, or whatever. It's also often simplistic, just like someone saying, everything the government tells you is propaganda.
What we find in a lot of this revisionist US history is instead of presenting events in American history as they happened with an attempt at being unbiased, every event is setup with a spin to make it sound like a travesty. And historically inexperienced people come to believe that, and then think that everyone else is naive and in the dark.
There are plenty of balanced historians out there who consider things objectively. You need to distinguish. Just as you're saying most Americans have been told distorted history, you need to consider whether you've gotten distorted history--but from the other side.