One night in El Paso (working as a Border Patrol Agent, circa 1985) we apprehended a group of a dozen Guatemalans who tried to claim they were Mexican. Their small stature gave them away and we had a good laugh
I've worked with Latinos that get really pissed to be called Mexican if they are Guatemalan, called Guatemalan when they are Mexican or any other thing.
It cracks me up that many get so bent out of shape about it.....Since most that I have worked with will call ANY Asian person a "Chino". Most Asians seem reasonably polite if you accidently mis-identify their race.
