The word 'terorism' is getting pushed too far.
This is something that we can actually agree on, Independent (except for the spelling of 'terrorism'

). I think that most of the actions by state sponsored armed forces that people are referring to would be more accurately defined as "war crimes." Doesn't make them more or less atrocious, but it's important to keep our terms straight. And James Eagan Holmes is not a terrorist, just a crazy a-hole with access to powerful weapons. Sad, but true.
As for your definition of terrorism; maybe the law is different in your country. Definitions vary from country to country because we all have to make sure we don't condemn our own actions. I'm only familiar with the law in America, as I have never lived in another nation. We actually recognize two types of terrorism, though one wouldn't know it from watching our ill-informed and totally biased media.
(1) the term “international terrorism” means activities that— (A) involve violent acts or acts dangerous to human life that are a violation of the criminal laws of the United States or of any State, or that would be a criminal violation if committed within the jurisdiction of the United States or of any State;
(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 outside the territorial jurisdiction of the United States, or transcend national boundaries in terms of the means by which they are accomplished, the persons they appear intended to intimidate or coerce, or the locale in which their perpetrators operate or seek asylum;
(2) the term “domestic terrorism” means activities that— (A) involve acts dangerous to human life that are a violation of the criminal laws of the United States or of any State;
(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 United States
This is all very important because it means that terrorism (international or domestic) is only terrorism if the act(s) are conducted outside the fold of a formal declaration of war. So, some of the unfortunate things that nations have done to each other during wartime can't really be called terrorism.
Getting back on topic, though, it seems like everyone is missing (unless I overlooked someone's post, in which case I apologize) the most obvious act of terror by an American Christian:
Oklahoma City. This was one of the most tragic events in American history. I was very young when it happened, but I still remember the horrible images on the television.
And one more thing: It ultimately does not matter what religion a person claims to practice, or what country they're from. Murderers are murderers. Period. The End. No discussion. We can sit here and talk about the hypocrisy of nations, and to an extent it can be a constructive conversation, but at the end of the day all that is left are a whole bunch of innocent human beings who have lost loved ones. Nobody has the right to take an innocent life. Ever. I think (hope) we can all agree on that.