(American here) I can understand completely why the rest of the world would have a general dislike or distaste, hell even downright hatred of Americans, but then I just take solace in the fact that they're just as ignorant and spiteful as Americans who are ignorant and spiteful of other cultures and countries just because they can be.
When it comes down to it, for me, every country has (to bring up another George Carlin quote), "a few winners and a whole lot of losers." You want to hate all Americans because of our media or because of the few assholes that we (sadly) let speak for us, fine, go for it. I for one don't hate anyone until I know something substantial about them.