[citations are missing] If you are going to make that kind of claim you really need to back it up.
In any event, the term "Assault Riffle" etymology
Sturmgewehr ("assault rifle", (
literally) "storm rifle", is not political. Further, even if we assumed your premise was correct, it's not, it doesn't alter the fact that the term has taken on a meaning, a definition one can actually look up. Words are not laws of physics. They are simply a means to transfer information from one person to another.
There are long barraled riffles with long stocks that are bolt action that are not considered to be of the same "class" or "type" of weapon as an AK47, M-16, etc.. These class of weapons are capable of a much higher rate of fire and are more effective at wounding and killing lots of people who are in close proximity.
I think even you would agree that if a person's goal is to kill lots of people in a pubic setting that the person would have more success with an AR-15 than a bolt action 30.06, right? If so,
then what's wrong with giving a designation to such weapons to distinguish them from single fire weapons that are heavier and more difficult to wield?