Actually, that's one of my favorite stories, so I'll bore you with it.
When I lived in Rio, I was able to get a Brazilian license under our reciprocity agreement. It took me about two days of wandering around various government offices to get all the required stamps on various pieces of paper, but I finally got it.
Unfortunately, I had sold my equipment before going there, and there was no chance of getting an antenna installed in my high-rise apartment building next to a cliff.
However, Brazilians have a saying that translates roughly "There's always a way around any difficulty; you just have to find it."
I learned that the US Consulate had a warehouse in a desolate part of the city, and there was a shortwave radio in it that was occasionally used to communicate with military flights from Panama. I got a consulate friend to loan me a key to the radio room, and I was allowed free access to it on weekends.
It was a general coverage transceiver, so it could easily tune the ham bands, and there was a huge honking rotatable log periodic antenna on the roof.
I would get on the air with my Brazilian call, and during a QSO with a US ham, I would frequently get a comment like "Wow, your English is incredibly good; I don't even hear any accent."
That was my opening. I had a little speech prepared to gently chide them about their built-in prejudice. "What, you think you're the only ones who can speak English? We have very good schools here -- some of them are probably better than some of yours. Etc. Etc. Etc. ...."
I had fun, and I didn't torment them too badly, but I like to think I did a little toward international understanding. At the time, I spoke nearly accentless Portuguese, so I wasn't a complete hypocrite.