America is diversifying, but Rust Belt cities lag

The number of areas in the United States that are almost totally occupied by members of one racial or ethnic group decreased dramatically over the last decade, a sign that diversity in the country is spreading far beyond urban cores.

At the same time, many American cities remain segregated between racial groups, according to data from the decennial U.S. Census, an indication of stagnant population growth and a legacy of racist laws, some overturned almost 60 years ago, that echo in population trends to this day.