Some social researchers argue that segregation in the United States of America is disappearing today, while others argue the opposite. The purpose of this study is to analyze whether residential racial/ethnic segregation exists in most U.S. cities, as well as a concentration of wealth, privilege, and poverty in parts of most cities. A brief historical introduction of the social framework of the United States seemed indispensable to understand the power dynamics that lead to different opinions. More than five hundred years have passed since the discovery of America, times of colonialism and continuous migrations from different countries around the world, and American citizens continue to talk about segregation. The United States of the 21st century is facing large migratory flows, which raise fears of losing control of national borders, traditional sovereignty, national security, religion, culture and customs. This gives rise to feelings of threat to social goods and properties, possible increases in financial expenses, and therefore social discontent in the American population (Bureiko 2012). It seems that this alarmed and dissatisfied population quite often forgets that the United States has historically been a nation of immigrants coming by choice from England, France, Germany, Ireland, Holland, Portugal, Switzerland and Spain, with the exception of the population from Africa ( by force), to live in the land of the Natives, in the colonialist era. Subsequently, in the period from 1890 to 1924, a second flow of immigrants brought people from Armenia, Austria, Bohemia, Bulgaria, China, Croatia, Czechoslovakia, Greece, Hungary, Israel, Italy, Japan, Lithuania, Moravia, Poland, Portugal. , Romano...... middle of paper......Minority Relations in America: Convergence in the New World. Pearson 2nd editionPlous, Scott (2013). Understanding prejudice. Social Psychology Network. Retrieved from http://www.understandingprejudice.org/segregation/board1.htm#top December 2013. Schaeffer, Robert K. 2009. Understanding Globalization. The social consequences of political, economic and environmental change. Rowman and Littlefield. Fourth edition. 70-76 Robertson, Ian. 1987. Sociology. A brief introduction. Third edition. New York. WorthTimberlake, Jeffrey M. and John Island 2007. “Change in Racial and Ethnic Residential Inequality in American Cities, 1970–2000.” Department of Sociology, University of Cincinnatti.Yang, Philip Q. and Kavitha Koshy 2012. “Trends in White-Perceived Black-White Residential Integration, 1972-2008.” The journal of public and professional sociology. 4(1)6