“white Christian ghettos.” What you just wrote fits in to what I have been thinking about off and on recently: the millet system.
“Millet (Ottoman Empire) Social structure of the Ottoman Empire Osmanli-nisani.svg
Millets
Jews
Armenians
Greeks
•Rise of nationalism
•Ottomanism
•Lifestyle
•Ottoman court
•Slavery
•Devşirme
Millet is a term for the confessional communities in the Ottoman Empire. It refers to the separate legal courts pertaining to “personal law” under which communities (Muslim Sharia, Christian Canon law and Jewish Halakha law abiding) were allowed to rule themselves under their own system.
After the Ottoman Tanzimat (1839–76) reforms, the term was used for legally protected religious minority groups, similar to the way other countries use the word nation. The word Millet comes from the Arabic word millah and literally means “nation”.
The Millet system of Islamic law has been called an early example of pre-modern religious pluralism. The concept was used for the communities of the Church of the East under the Zoroastrian Sassanid Persia in the 4th century before establishment of the Ottoman Empire.”
http://dictionary.sensagent.com/Millet%20(Ottoman%20Empire)/en-en/
Think of one thing: genocide. Of the Greek millet. Of the Armenians. No wonder there are moves to deny these events. http://www.armenians.in/armenian-genocide/
The Chocolate cities will be gentrified, the indigenous population will happily move to the burbs. Unicorn farts and skittles.