I remember in the late 70's and through the 80's when I was growing up, when we would play with action figures or in any role-playing game where there was an enemy, the bad guy always had a really bad Russian accent. Even in movies of the time or tv shows all of the bad guys had Russian accents.
I think this was still true through the 90's and the early 00's - right before 9-11.
Have you noticed that things have changed? Now when I listen to kids role-playing they are putting on really bad middle eastern accents for the enemy. Now, even radio and tv are picking up on it, too. I heard a guy on the radio pretending to be a bad guy and he adopted a middle eastern accent for his character.
I wonder which language or cultural stereotype is going to be next.