One avenue for that is through the 100 Joint Terrorism Task Forces – or "fusion centers" – set up throughout the US after 9/11. Some have already begun warning local agencies of increased extremist activity.
The wave of extremist acts began last summer:
-Jim David Adkisson has been convicted for killing two in a church in Knoxville, Tenn., on July 27, 2008. He wanted to kill Democrats in Congress, Supreme Court justices, and then-presidential candidate Barack Obama, but instead settled for the "foot soldiers" of liberalism, referring to the members of the church in a letter.
-The Bureau of Alcohol, Tobacco, Firearms and Explosives said in October that it has disrupted a skinhead plot to assassinate Obama and kill 102 black people in October.
-A Brockton, Mass., man is charged with killing two people during a rampage across the city in January. He told authorities he wanted to kill as many nonwhites as possible.