Nowadays, the Arabian peninsula (and a lot of the land around it which is lumped in with it because it is A: Muslim (never mind what branch), and B: looks a bit sandy) seems to be a rich source of terrorists and people burning American flags.
Ironically, before the 9/11 attacks, Arabs were still acceptable targets in a lot of Western media, being stereotyped as obnoxious : "The Arab is a bit flash - he'll buy a Sierra Cosworth and replace the headlamps with chandeliers.
Also look out for all the wind mills in their country.
Arabs Except, ironically, just after the 9/11 attack (then again it was sadly a case of swapping one stereotype [obnoxious and/or oil tycoons] for another [zealous terrorists]).
White Anglo-Saxon Protestant males Whites, being the majority of Americans for now, are the group that are the least discriminated against, but actually there is quite a lot, albeit tame in nature. Irish-Americans Cast as being in the seat of white privilege (which means, of course, that they're Catholic Celts who are considered WASPs), and still obsessed with their heritage and worse days that may or may not have existed.
Ironically, this opens the door to the old Nash stereotypes like untenably large families, alcoholism, and elaborate wakes, since rather than even making fun of the stereotypes, it's making fun of the self-serving reification of the stereotypes.
These stereotypes still crop up from time to time, but they've mostly faded out... They're mysterious, if they aren't outright tricksters and thieves. Little do most people know that they're continuing the ancient European tradition of discriminating against the Roma, which was at its height around the Holocaust (which the Roma were victims of).
Most European and South American nations are the same.
And they will be depicted as being stingy misers who would rather die than pay a dime. The Dutch They are some of the most stingy persons you will ever encounter.
Expect them also to be environmental activists, fanatical supporters of healthy food, preachy Moral Guardians etc.
Remember that these aren't always ethnic in the literal sense we're used to — they just refer to groups who are targeted for their physical appearance or for having inborn traits that they can't really change.
Foreign/unusual accents and dialects are also typically considered speech impediments, and therefore become subjects of mockery much like Acceptable Hard Luck Targets.