Have just been trying to use a ´neutral´ vocabulary to describe a situation familiar to many citizens of vast nations like Russia, USA or China.
Imagine you were born and raised in a Russian province town like Smolensk and suddenly for your new job you have to move to Makhachkala down in Dagestan! Wow, that will teach you a lesson about clashes of civilization...
Similarly some people moving e.g. from Seattle to the ´Deep South´, lets say Birmingham, Alabama felt suddenly like immigrants in their own country although most people were brawling around in a language at least resembling to English.
But don't worry dear Scratch, many people from rural Germany have that kind of peculiar feeling too, after making first ´urban experiences´ in Berlin's or Frankfurt's quarters already dominated by Muslim immigrants.