Once again, terrorism is not the use of bombs, or taking prisoners which others called "Hostages".
It is the:
- use of violence
- against non-combatants
- for political purposes.
This note confirms the political requirement, making it terrorism. Without it, we just had a criminal.
Not that it matters, he is still going to be tried and convicted by a civilian court, because that is a right everyone in America gets. (Unless Martial Law gets declared).