Removal of the draft riots. 

Either put the Whiskey Rebellion and Shay's Rebellion on the list or the Draft Riots weren't terrorism.  The Rodney King riots can even be argued to be terrorism by the logic for the draft riots.  Basically rebellion and terrorism are very closely linked conceptually, and unless it is carefully delineated, people like whoever put the draft riots on there are merely categorizing any form of reactionary violence as terrorism (rather than revolution, rebellion, or insurrection, or what have you.)