Ethnic Culture on Flight decks -Arrogance or Stupidity
I once listened patiently to a gentleman who was complaining about foreigners coming to his country and taking all the good things...before he calmed down and remembered that I am an economic migrant in the sense that I am home-based away from my homeland. He also insures and services his car over the border because it's cheaper.
Not quite cultural but another example of how friction can be generated internationally!