Almost all Tintin books contain stereotypes of one form or another. I’m surprised the Arabs haven’t jumped all over this, too.
The Bordurians were made out to look like Soviet thugs, but you don’t hear them complaining! ;^)
You should read Tintin goes to America...
All Americans are cowboys, gangsters, or top-hatted businessmen. And the things they wrote about Indians, er, “Native Americans...”