I think it is more true that Americans seem "ignorant" [stupidity implies an intrinsic deficiency of intellectual ability] because the mechanisms of social control - especially including that FOXY Australian billionaire's propaganda machine - make it hip to be a no-nothing. As an American I can assure you that we face plenty of ignorance in our public discourse almost always designed to promote greed and demogoguery, but rest assured that there is a significant population of American readers who are, unexpectedly, pragmatic idealists. They are endlessly lampooned by selfish interests that time will show to be enemies of the people's best interests.
DOug Saum