Looks like someone has a real problem with US, maybe didn't get the VISA???
I personally thought American were ignorant and arrogant when I first landed and was told the same back home. You know, everybody hates the successful one, it is a simple human nature. Nobody likes the smart and the rich kids.
I once asked my American friend who was the Prime Minister of Canada? and upon realizing he did not know the answer, he answered the most fascinating and an honest answer that you could possibly get from an American. Who care? What has he done that we need to know him? I'll be better off knowing my neighbor. I was speechless and in return could not answer him back. I asked myself, what exactly the Prime minister done? Why should I spent time and energy to know about him? He's never on the news and never does anything significant on the global scene.
So my point is there are many reason why Americans can be so ignorant and arrogant, the most important fact is- they don't need to know about it. We know a lot cause we're so poor and have the need and the reason for the need to learn about it. When you are on the top, the bottom ones does not care.