Grover Furr is a neo-Stalinist falsifier of history well-known for his stunning incompetence, ideological myopia and fanaticism ("I have yet to find one crime that Stalin committed").
On 15.08.2022 he published an article accusing me of a "lie" on the issue of the police identification tags (he calls them badges, which is OK, but since we're not talking about the badges worn on the uniform, I will call them tags) found at Volodymyr-Volynskyi (a detailed explanation of the issue is here) in my 15.12.2021 article (about a Katyn denial propaganda film on the Russian NTV channel) in the Nobel-prize-winning Novaya gazeta (here in Russian; I will refer to it as "the NG article").
Ironically, Furr focuses only on this one claim, even though the bulk of the argumentation in his pseudoscholarly Katyn denial book The Mystery of the Katyn Massacre: The Evidence, the Solution has been debunked by me here, here and here (as well as all over the Katyn Files website; though mostly as arguments of other people; there's precious little original content in Furr's propaganda pamphlet). [Update: a full debunking of his book.]