This is objectively such a stupid thing he said (as well as being pure bigotry and evil). Wherever you go in the world, there are great and intelligent people in every single walk of life. He is trying to dehumanise his opposition - the Left does this all the time. In England, the left call the white working class knuckle-dragging tattooed thugs, and 'gammon', a racial epithet for men who work outside and are pink and weathered from it. It's exactly the same thing going on. Dehumanise and destroy.