The concept of a ghetto has traditionally been one that implies the involuntary segregation of a poor or marginalised group into a less than desirable quarter of a city, often totally cut-off from the nicer parts of town.
Today though, in affluent western cities whether New York, Berlin, London, Toronto, San Francisco or Los Angeles, economically well-off individuals of the liberal mindset, tend to voluntarily wall themselves off in a psychological and spiritual ghetto. In this place, they are sheltered from the realities of the real world.