Most Germans especially hate being insulted....
I know because I am part German.
However, what Jaz said is quite accurate. If an Alabamian hic or dumb cowboy wanna-be slob from Nevada was to come over across the puddle, most narrow-minded Europeans would, sadly, conclude that
all the Yanks are that bad. However, that simply isn't so. There's going to be a few bad apples in every tree.