Pax Ethnica

I just finished reading a fascinating book--Pax Ethnica--by Karl E. Meyer and Shareen Blair Brysac.  The book discusses where and how diversity succeeds.  The authors reveal some important phenomenons, such as:

• It is safer to live among immigrants and nonwhites than in more affluent neighborhoods which is determined by crime rates.
• Foreign-born workers, whether legal or not, pay more in taxes collectively than welfare benefits they receive.