mask sign A sign outside a store requests customers wear protective masks upon entering, in Baltimore, MD, in order to prevent the spread of the Coronavirus, on Saturday, April 25, 2020. (Photo: Diego M. Radzinschi/ALM)

Thompson & Knight has fired an administrative employee who published a "threatening and offensive post" involving references to a gun on his personal social media account, because he didn't want to wear a face mask when shopping at a Whole Foods in Dallas.

In the social media post, which circulated on Twitter and Facebook over the weekend, Kevin Bain, a former document services manager at Thompson & Knight, threatened to show a security guard outside a Whole Foods his shooting range results from a Glock instead of his COVID-19 test results.

"It's time to stop this BULLSHIT," Bain wrote.

Bain's Facebook and LinkedIn accounts have been taken down. But according to a screenshot of his posting, this is what he wrote:

"No more masks. Any business that tells me to put on a mask (Whole Foods on Lomo Alto) in Dallas will get told to kiss my Corona ass and will lose my business forever. It's time to stop this BULLSHIT. Do I have to show the lame security guard outside of a ghetto store my CV19 test results? I will show him my Glock 21 shooting range results. With Hornady hollow points. Pricey ammo, but worth it in this situation. They have reached the limit. I have more power than they do….they just don't know it yet," Kevin Bain wrote in the post.

In addition to firing Bain, Thompson & Knight said in a Facebook post on Friday that it has notified proper authorities about the social media post.

The Dallas-based firm said in a statement:

"This afternoon we learned that an administrative employee of the Firm issued a threatening and offensive post on a personal social media account related to COVID-19 mask protections. This post is a complete violation of the values of our firm, including our commitment to the health and safety of the communities we serve. We have terminated this individual's employment and notified the proper authorities about the post as a precaution. We are deeply sorry for this situation. This type of post is not and never will be tolerated by our firm."

A representative confirmed that Bain had worked at the firm since 2009. She said the firm would have no further comment.