"Any activity that (1) involves an act that is (a) dangerous to human life or potentially destructive of critical infrastructure or key resources, and (b) a violation of the criminal laws of the United States or of any State or other subdivision of the United States; and (2) appears to be intended to (2.a) intimidate or coerce a civilian population, (2.b) influence the policy of a government by intimidation or coercion, or (2.c) affect the conduct of a government by mass destruction, assignation, or kidnapping". (DHS, NIPP, 2006, p. 105)