There's something that embarrasses me year after year on The Amazing Race. It's the "ugly American." There are always people who think everyone in the world speaks English, even if they live in places where the norm does not include wearing shoes. On top of that, they think speaking English with their version of a regional accent will make them better understood. I think that's insulting and extremely ignorant. I'm a talker. I think if you're going to take the time to go somewhere, you should at least learn a few phrases. But apparently that's just me.
There are other things Americans do when abroad that aren't necessarily embarrassing, but they can be viewed as ignorant, even offensive. Here