Sue says…

The Most and Least Racially Diverse U.S. Religious Groups

From the article:

The nation’s population is growing more racially and ethnically diverse – and so are many of its religious groups, both at the congregational level and among broader Christian traditions.  But a new analysis of data from the 2014 Religious Landscape Study also finds that these levels of diversity vary widely within U.S. religious groups.

http://www.pewresearch.org/fact-tank/2015/07/27/the-most-and-least-racially-diverse-u-s-religious-groups/