What are some modern day examples of de facto segregation?

One example of modern day de facto segregation is urban segregation.

Explanation:

Urban segregation is a phenomenon common to all U.S. cities, not only the major cities, but also medium and smaller cities. This can be seen in New York City, Chicago or Los Angeles, but also in Selma, Alabama or in Augusta, Georgia.

The reasons are many and complex, and are the subject of academic inquiry for economists, historians, political scientists, and sociologists. Old segregation laws are often cited as a cause that still has effects on segregation today, but also subjective factors like in-group preference.