Update Below: Written Aug. 12, 11pm

Around 2001, Kenneth Walton made headlines for trying to sell a forged Richard Diebenkorn painting, getting caught and then writing a memoir about the experience. Now the San Francisco-based author is in the news again, but this time for a viral Facebook post detailing his side of a run-in with Arizona's Department of Public Safety (DPS).

As of 14 hours after Walton posted his story to Facebook, the post has been shared more than 2,500 times, one of the sharers being outspoken New York Daily News reporter Shaun King.

Early Friday morning, Walton posted that he had been pulled over by a highway patrol officer from Arizona's DPS while driving to the Grand Canyon from Nevada with his daughter. Unfamiliar with the rental car he was driving, Walton said he had issues opening his passenger side window and the officer, growing impatient, pulled his weapon and threatened to shoot Walton.

My daughter rolled down her window and I explained that we were in a rental car, that we had no weapons, and I was having trouble figuring out how to roll down the front passenger window from my driver's side door. The officer didn't listen, and kept yelling louder and more insistently, ordering me to comply with his request as he leered at me down the barrel of his pistol. My daughter panicked and tried to get out of her booster seat to reach forward to roll down the front window, and the officer screamed her at her not to move as he pointed his pistol at her. Somehow I was able to get the window down, and then the officer ordered me to exit the car with my hands up. I did so slowly and with my hands raised as high in the air as possible, and as he came around to the driver's side of the car he screamed at me to face away from him, as if I were doing something wrong. (I didn't know this was the protocol for being arrested at gunpoint.) Then, as I had my hands in the air, he yelled, at the top of his lungs, in a voice I will never forget, as my daughter looked on in terror, "Get your hands away from your waist or I'll blow two holes through your back right now!"

Walton says the police officer let him go after determining that he was not driving a stolen vehicle. But Walton's daughter was traumatized by the incident. In his Facebook post, Walton named the officer who held him at gunpoint -- Oton Villegas. Villegas joined the Arizonas DPS' Highway Patrol in 2008, according to an Arizona Department of Public Safety newsletter.