***UPDATE***
SWAT Team Kills Workplace Violence Hostage Taker
"A SWAT team shot and killed an armed suspect who took hostages at a Walmart in Amarillo, Texas Tuesday afternoon, investigators confirmed, saying all the hostages are now safe.
Police identified the gunman late Tuesday as 54-year-old Mohammad Moghaddam.
We do consider this a work-place violence situation at this point," the sheriff's office said."
Likely this is an example of a radical assault-style-rifle, not tied to any other rifles, a lone wolf rifle if you will, hijacking the peaceful idea of not having your constitutional rights infringed. Poor Mr. Moghaddam was at work, minding his own business (the article does not mention Moghaddam's religion, but it is Texas, so it could be Catholic, Pentecostal, Lutheran, etc., you never really know with gun owners), when the gun assaulted his sensibilities. This is clearly an example of workplace assault-rifle violence, since Walmart is a place where people work. But barely, Walmart does not provide full medical insurance to every single employee, and starts part-time employees at the minimum wage, and has only two types of bathrooms. One might ask - why hasn't more assault-rifle violence taken place at "workplaces" like this one.