An appropriate thread that opens with:
Ten years ago, the Department of Homeland Security sent American law enforcement agencies an intelligence briefing warning of a rising threat of domestic rightwing extremism, including white supremacist terrorism
The author of the report has a Q&A contribution and here is part of one answer:
..the political fiasco surrounding the report created a chilling effect in the law enforcement and intelligence community. It indicated that this topic is radioactive and you better stay away from it.If you pursue it, there’s going to be hell to pay: that was the message. People did lose their jobs. Good analysts were harassed and retaliated against.
There is a closed 2009 thread on the original DHS report: