"There is a difference between not liking the US government and not liking a US citizen"
What is the average percentage of the US population that can be bothered voting? Roughly 60%
So, that's 40% of the populace who can't be arsed to make enough of a difference locally to try and mitigate the global opinion. Enough of a reason to dislike them.
Then, you have those who constantly vote for the one party, regardless of actual policies, and do nothing to hold their chosen representatives accountable when they breach international or local laws. Given how it happens on both sides, let's call that 30%.
Then, we can add about another 10% for either the extreme right or left wing loonies who demand the rest of the world HAS to work the way they want, regardless of whether that way works in reality.
So there is justifiable dislike and/or hatred for 80% the US populace.