Think of the most idiotic people you've seen in America. Maybe it's the "God hates fags" protestors. Maybe it's the 9/11 truthers. Whatever. Now think how you would feel if people halfway around the world judged you and affiliated you with those people, just because you're from the same country.
Funnily enough, that's a little bit what's happening with America now. A lot of Europeans can't help but think that the entirety of the US have lost their senses electing Trump, when in reality the country could not be more divided.