USA.gov - As the U.S. government's official web portal, USA.gov makes it easier to locate U.S. government information and services on the web.
U.S.Commission on Civil Rights
National Criminal Justice Reference Service
U.S. Department of Justice
USDOJ Civil Rights Division
U.S. Equal Employment Opportunity Commission
FBI -- Civil Rights Investigations
FedStats - Statistics from over 100 Federal agencies. Start here when you don't know the specific agency preparing the statistics.
Statistical Abstract of the United States
U.S. Census Bureau
Bureau of Labor Statistics
National Center for Education Statistics