There are stupid people in every nation on this planet. Sometimes there are more less intelligent people in one country than there are in others. But then you have to step back and look at the United States. You see us as a nation, but we view us as 50 different countries, and each state is extremely different from the next and the last. I come from New York, and I'm basically considered an outsider when I visit rural states; a city slicker if you will. They treat New Yorkers like we're from some European country (which is pretty close to the truth, actually) and pretend we're lower than they are.
We are all very different, so to say, based on a few people from Texas, that all Americans are ignorant is in itself very ignorant. You know what you see on tv or see in music videos or what your grandpappy told you about the evil Americans, so you're as much a victim of propaganda as many Americans are.
I'll admit, those people were pretty stupid and most people on this forum could have answered those questions quite easily, but the vid is meant to be fun. Yes, it pokes fun at America, and that's fine. I laughed because it was hilarious. But to put me and anyone else you have never met and don't even know exist into that category is wrong, and that is why I reacted the way I did. I apologize for overreacting (if I did).