MELTING POT OR SALAD BOWL ?

Introduction :

With over 309 million people, the United States is the third largest country by its population. It’s one of the most ethnically diverse and multicultural nations by its rate of immigration at the large-scale from many countries as Mexico, India or the Philippines. But are they making a part of a society becoming more homogeneous so as to "melt together" into a harmonious whole with a common culture, it means melting pot ? Or do cultures juxtaposed keep their own distinct qualities like in a salad bowl ? How did the American society reacts to these arrivals from immigration ? How does it look like now ?
This document would help answering this question.
This cartoon is a caricature called « The Plan ». It’s composed of 6 vignettes showing an American city changing time by time due to immigration.

Development:

1st vignette : white are living in downtown, rich districts (buildings, skyscrapers refer to the economical and financial center).
Since the liberalization of immigration policy in 1965, the number of immigrants living in the United States has roughly quadrupled.
American people, mainly white, are reluctant to the arrival of these new minorities into cities. Most of them come to the US to escape the situation of their original country touched by poverty or civil wars.

But nowadays, most American cities are suffering from a serious urban problem known as the urban sprawl. It is the movement of people outward to the suburbs, emptying the inner core of the city and leaving poverty there. White people are moving to more individual houses, detached houses to improve their own intimacy. There are many elements to this problem that accelerate the process, but even among those, there is an issue related to ethnicity as well. White American population is trying to avoid the