There are lots of definitions of terrorism but none of them are accepted Every definition is disputed by somebody That is the reason many news agencies dont label any attacks as terrorist attacks and nor should we Investigating and adjudicating as to whether a particular incident falls within the US State Department definition of terrorism for instance when the State Department itself has not given its opinion on the subject is most definitely Original research Remember that an argument can be made that the Boston Tea party could qualify as a terrorist incident under some definitions That is why I am suggesting we list all notable violent incidents and ongoing conflicts and let our readers decide whether they want to call a particular incident terrorism This would let us include the  Tucson shooting for instance without having to determine the shooters motive We could also include incidents like the  Kingston unrest even though that was criminal rather than political violence