World's worst tourists? I don't think its a national or cultural distinction. I have dealt with very nice tourist and inexcusably awful ones from all over the world.
I think its a matter of who is wanting to learn about and enjoy the place they are visiting versus who is there just so they can say they have been there. The former are usually wonderful, and the latter are often the ones to actively avoid.
My worst was a man from an African country (irrelevant which one) who had been sent to school in Moscow (then USSR). For days every word out of this person's mouth condemned either the U.S., capitalist economies, all religions (he was atheist, though his family was muslim) or some aspect of the city we were in. I wanted badly to tell him to get his backside on a plane and go home to his beloved Kremlin! But he was a diplomat's son and here on official business so I had to keep quiet, grit my teeth, and smile.
The pay back? There is always payback! A year later he was begging for asylum, wanting to go see another football game in the big stadium and eat hot dogs!!!
