Gonad the Barbarian
Lifer
The "assault weapon" terminology is stupid, as you've said, but people gravitate towards an easy, "scary" term to throw around when discussing these things. Unfortunately this term leads to a great many confusions and misunderstandings and as a result, retarded policy.
"Semi-automatic firearm" is best. I think "self-loading" is even better. But good luck educating people. "Assault" sounds scarier.
You know what sounds even scarier? 50 dead, 50 wounded.