This thread is interesting because it points to the fact that a universal definition of terrorism is very difficult to pin down. The U.N. throws up its hands and takes a consensus approach:
http://www.unodc.org/unodc/terrorism_definitions.html
But if we take the Patriot Act's definition of terrorism, it seems to me that any act that any state looks at as violently illegal is, by the U.S.' definition, a terrorist one. Thus, if the U.S. has broken the laws of other countries in a way that is dangerous to human life, then the U.S. is a terrorist organization as well. This definition, I believe, creates all sorts of problems from an international perspective. But it certainly indicts the Graduate Student.
USA PATRIOT Act Definition: "activities that (A) involve acts dangerous to human life that are a violation of the criminal laws of the U.S. or of any state, that (B) appear to be intended (i) to intimidate or coerce a civilian population, (ii) to influence the policy of a government by intimidation or coercion, or (iii) to affect the conduct of a government by mass destruction, assassination, or kidnapping, and (C) occur primarily within the territorial jurisdiction of the U.S."