I don't have a narrative. Everything in this story points to a disgruntled employee. Happened in my former company some years ago. He used a gun and no one mentioned his religion. Wonder why that is?
Are you going to give links to this happening in the US? By all means go ahead and provide your hundreds of examples
Wikipedia is fine in this situation since it's just providing a story.
Ok....I know it's difficult to grasp, so here goes. Followers of Islam are, by and large, the only group who sanction, suggest, and utilize beheading as commanded in their scriptures against any and all non-believers.
I'm not really sure why it needs to have taken place here to be relevant but here you go:
Ariel Sellouk Houston, Texas U.S. August 2003: throat was slit and beheaded.
Hossam Armanious, Amal Garas, Sylvia Armanious, and Monica Armanious, Jersey City, N.J. U.S. , January 2005: necks, throats and bodies stabbed, mutilation of Coptic tattoo.
Aasiya Hassan Buffalo, NY U.S. 2009: Beheaded by her husband Muzzammil Hassan
Brendan Mess, Erik Weissman, and Raphael Teken Waltham, Massachusetts, U.S. September 2011: throats slit, probably by Tamerlan and Dzhokhar Tsarnaev, the Boston Marathon bombers.
Hany F. Tawadros and Amgad A. Konds Jersey City, N.J., February 2013: shot, decapitated, hands severed.
Muslim Acts of Beheading Inside the United States | sharia unveiled
Obviously that omits the rash of infidels "losing their heads" to Islam worldwide in the last 30 days....but even you have heard about those.