Generalisations are the domain of lesser-thinkers, IMO. Those are spread far and wide around the world. Just as Americans like flymike hate Palestinians because a minority of them take up armed resistance, many people in the world look at the actions of successive US administrations and perceive that ALL the Americans are wicked, evil oppressors. After all, they elect and re-elect these tyrants, right?
Unfortunately most foreign nationals don't understand the severity of the problem in the US, particularly in regards to the biased contamination in the media, and actually think that American citizens are willing party to the US's foreign policy. The truth, in fact, is far different. Most Americans have absolutely no idea what the US government is doing now, or what it has done in the past. Sadly, internationally, the loudest American voice today is that of the neo-con. It would be difficult for the rest of the world to do anything but despise that ideology, and so the over-generalised hatred is perhaps inevitable.
However, I have to say Tristan that if you really do generalise like you say, then you're not applying your grey matter at all well. That's unfortunate, because a lot of us paid handsomely for that education of yours and we hate to see our money go to waste.
I have an advantage over most non-US nationals because I lived in the US for a few years, I was at O'Hare airport that day and experienced 9/11 as all parents of American children did. I picked up my kids early from school lock-down, with no answers for them at all. I shared the anger and the confusion, I wanted to nuke Afghanistan like everyone else did in the days that followed. All that anger, and nowhere to direct it. We didn't understand about the Taliban, we just were given the name and location of a guy called "Osama Bin Laden", and told to blame him.
I asked the question that all Americans asked.. "why do they hate us so much!?" and in those days I had no idea that there even IS an answer. There is.. but it's almost completely inaccessible in the US - 100% obscured in the popular media, in fact. I didn't start getting answers from the media until I stopped searching for it in the US media. Most Americans still don't know there IS a perfectly clear answer to that question and they'll take any answer they're given. Even Bush's completely bogus "They hate us for our freedoms", which the rest of the world knows without a shadow of doubt is complete and utter bollocks.
There is no question in my mind that there is a conspiracy. Probably several. I believe this, based on evidence that I can see for myself - political posturing, evidence of policy, corruption etc. That doesn't mean that I believe that any of the WTC buildings were demolished by nuclear charges or any such stupid nonsense, and I am very irritated by those lame conspiracy theories because they just cause furring, and irritation, and a certain weariness that stops normally reasonable thinkers from asking the questions that could actually bring some answers.