Should be followed by the importance to look around, understand the differences and enjoy, rather than complaining that the places you travel to should be more like home.

I've only ever seen one stereotypical "ugly American". It was a stocky older woman in the lobby of a hotel in Japan. She was complaining about everything, from what I could tell. I don't remember her complaints specifically now, but she certainly wasn't happy with the food (we were actually in the dining room for breakfast).

If I can help a fellow traveler, I often will (offer advice or suggestions). I quickly determined that she was worthy of being ignored, and that's what I did. Just tuned her out, thinking "she just doesn't get it". I would say people like that should probably burn their passports and stay home, but at the same time it's people like that who need to experience different cultures and living standards. Something of a conundrum.

Most of the Americans I see overseas these days are grinning monkeys pointing cellphones at themselves (and nothing else...they don't capture what they're seeing, they just pose in front of it).