http://www.aclu.org/national-security/foia-documents-fbi-show-unconstitutional-racial-profiling
From the page: The FBI has been targeting American communities for investigation based on race, ethnicity, national origin and religion according to documents released today by the American Civil Liberties Union and its affiliates that were obtained under the Freedom of Information Act.
The documents show that FBI analysts across the country are associating criminal behaviors with certain racial and ethnic groups and then using U.S. census data and other demographic information to map where those communities are located to investigate them.