I wonder what the editorial conversation was that prompted the language change from “assault rifle” to “semiautomatic rifle” and not to “assault weapon”.
“Assault rifle” is clearly wrong if it was indeed a semi-automatic. But most media coverage these days likes to describe any scary-looking-black-modern-rifle as an “assault weapon”
Update (11:14 am): Looks like I spoke to soon. There was another edit!
So by my count, it was assault rifle, changed to semiautomatic rifle, and then changed back to assault rifle.