You are wrong this time. "Semi-automatics shoot one bullet per trigger pull -- that's the definition." That's not quite the definition. A semi-automatic also ejects the empty cartridge and cocks the weapon so you can fire it the next time you pull the trigger. A revolver does NOT meet this definition. Neither does a bolt- or lever-action rifle, or a pump-action shotgun. Or a double-barrel shotgun. A LOT of guns manufactured since the civil war are NOT semi-automatic. On the other hand, you are completely correct about the definition of an "assault weapon" - "whatever politicians say they are." I fully support your actions, even when I can find a nit-picking error.